You Have No Idea Who You're Dealing With

A common Stock Phrase often spoken to a character who, well...you know. Can be played for laughs or as a threat (especially when the "who/what" in question is really a Not-So-Harmless Villain). Someone who can easily mop the floor with the fool who's trying to pick a fight, but doesn't feel like doing so at the moment, might say this as a final warning to back off.

When done in a comedy fashion, it's often similar to the following phone conversation:

[Person A getting more angry at Person B who is disrespecting them] Person A: Do you have any idea who you are talking to?! Person B: Yes. Do you know who I am? Person A: No. Person B: Good. [hangs up]

Can also work with three characters, usually The Villain, The Hero, and someone else who's picking a fight with the villain, not knowing who they're dealing with - while the hero does, having faced them before, and tries to warn the third character before they get themselves killed.

It can often also be said by those who intend to Screw The Rules because they have Connections, Money, Superpowers, or because They Make Them.

See also Actually, I Am Him.

Examples of You Have No Idea Who You're Dealing With include:

Advertising

• This lottery commercial plays it for comedy.

Anime and Manga

• A variant serves as one of the Catch Phrases in Tengen Toppa Gurren Lagann: "Who the hell do you think I am/we are?"
• Post-time skip in One Piece had the fake Straw Hat crew attempting to hunt down a girl who refused to drink with them and the boy who attacked them with a plant Who happened to be the real Nami and Usopp. The Fake Luffy later "captured" someone who had earlier humiliated him who was none other than the real Luffy himself. Interestingly, none of the real Straw Hats openly broadcasted the fact that they were the authentic ones and when the Fake Straw Hats found out that they had interacted with the real ones, their reactions were appropriately stunned and terrified.
  • Also the Straw Hats (minus Robin) when they first met Aokiji didn't fully understand how powerful the Marine's top people could be and how far Luffy and the others had to go before they even remotely stood a chance against one third of the Greatest Military Powers. Not long after that, the Straw Hats meet Kizaru, and then Luffy meets Akainu; those three remain the only ones who have ever made the Straw Hats seriously angry – while actually being their enemies – and gotten away with it.

Comic Books

• In Gotham Knights #31, Batman tangles with an elite black-ops team:

Team leader: You don't know who you're dealing with. Batman: Deren, Robert. Age twenty-three. Gave a kidney to his diabetic sister two years ago. Probably needs the other one. Wilson, Scott. Thirty-four. Football knee injury. Kellerman, Dana. Twenty-nine. Took shrapnel in the shoulder during the Gulf War. Still takes pain-killers for it. Goldman, Eli. Thirty-one. Allergic to penicillin. Joint wounds are slow to heal and prone to infection. Baithswaine, Gregory. Twenty-eight. Perfect medical record. So far.

• During the "Season of Mists" storyline of The Sandman, the demon Azrael seriously underestimates Morpheus and gets a lecture about it from the Shaper of Dreams for his troubles.
• In the first arc of Garth Ennis' Punisher MAX, Frank's old partner Micro is trying to disuade a trigger happy CIA spook that, if they want to take Frank alive, swarming him with Special Forces simply won't work.

Man: Some of these guys are meant to be pretty good. Delta Force, I think. Micro: I don't care if they're God's own anti-son of a bitch special forces. He'll go through them like a buzzsaw.

Fan Fiction

• A Yakuza Mook tells this to Kyon in Kyon: Big Damn Hero. Since he's time traveling to the past, he already knows exactly whom he's dealing with.

Film

• Men in Black

Kay: Don't "Sir" me young man, you have no idea who you're dealing with.

• The Deaths of Ian Stone

Gray: You have no idea what you're dealing with here. They can alter reality, control minds. You only see what they want you to see.

• The Matrix

Lieutenant: I think we can handle one little girl. I sent two units, they're bringing her down now. Agent Smith: No, Lieutenant, your men are already dead.

• In the film version of The Musical Little Shop of Horrors, Audrey II sings in "Mean Green Mother From Outer Space":

Ya don't know what you're messin' with. You got no idea. Ya don't know what you're lookin' at When you're lookin' here. Ya don't know what you're up against, No, no way, no how. You don't know what you're messin' with, But I'm gonna tell you now!

• Happens in Blade II when Blade says, before setting of the light grenade,

"You obviously...do not know...who..you're...FUCKING WITH!"

• The bank manager in The Dark Knight.

Do you have any idea who you're stealing from? You and your friends are dead!

• • Later it turns out that, the man he was talking to, the mob had no idea how dangerous he was.
• Although he doesn't say the trope exactly, in No Country for Old Men Carson Wells tries to get the gist across to anyone who asks him about Anton Chigurh. He has mixed success.

Moss: If I was cuttin' deals, why wouldn't I go deal with this guy Chigurh? Wells: No no no. You don't understand. You can't make a deal with him.

• Back to The Future, part II: "Kid, I own the police."
• Mr. and Mrs. Smith say this to each other - after they tumble to the fact that they're assassins for rival organizations.
• "Don't make me angry. You wouldn't like me when I'm angry"
• The Avengers - Thor breaks Loki out of the SHIELD Quinjet, hoping to make him see reason and return to Asgard. When Iron Man interrupts his "stop this take-over-the-world nonsense and come home, brother" speech, he's not happy.

Thor: You have no idea what you're dealing with. Tony: Uh, Shakespeare in the park? "Doth mother know you weareth her drapes"?

Literature

• In the first novel, after Erast Fandorin is captured by a baddie for the nth time, said bad guy proceeds to explain that the conspiracy Fandorin is targeting is much bigger than he thinks.
• Artemis Fowl - "Stay back, human. You don't know what you're dealing with."
  • Gets even funnier in the Time Paradox when Artemis says to his younger self:"Stay back, you don't know what you're dealing with." It didn't work that time either.
  • That Artemis. He's just incorrigible, but fans should be happy he ignored this line.
• Discworld - In Thief of Time, Lu-Tze has this done for him by the dojo master.

Live Action TV

• Burn Notice - "Fight or Flight"

Bruce Gellman: You have no idea who you're dealing with. Michael Westen: No, I read the article. Most of it anyway. Scary guys, drugs, guns. Did I miss something?

• Lois and Clark: The New Adventures of Superman - "The People vs. Lois Lane"

D.A. Clemmons: I suggest you keep your emotions in check, Mr Kent. You obviously have no idea who you're dealing with, here. Clark Kent: Yeah, neither do you.

• 24 - "Day 5: 2:00 a.m.-3:00 a.m."

Bill Buchanan: You have no idea what you're dealing with, you little ass kisser!

• Kings - "The Sabbath Queen"

William Cross: You insist on keeping Andrew in the cold, you'd better learn to live in the dark. Queen Rose Benjamin: You have no idea what you're dealing with.

• Angel, episode 1:

Cordelia: You don't know who he is. Oh, boy... you're about to get your ass kicked.

• • And a similar character moment in the Series Fauxnale of Buffy:

Buffy: You ever heard the expression, "biting off more than you can chew"? ...Okay, um, how about the expression "Vampire Slayer"? Vampire: What the hell are you talking about? Buffy: Wow. Never heard that one? Okay, how about, "Oh God, my leg, my leg?" (Breaks his leg) Vampire: Oh God, my leg! Ah!

• Fresh Prince Of BelAir

Police Officer: "Now wait a minute, buddy, who the hell do you think you're talking to? Phillip Banks: Who the hell do YOU think you're talking to?!

• Crops up in Doctor Who, especially in the revival.

All those stories you've heard about him? They're not stories, they're true! Really, you're not telling me you don't know what's coming?

Video Games

• In Max Payne, when Max confronts the cop traitor B.B., the latter keeps repeating that Max "has no idea how huge this is", referring to the conspiracy that Max doesn't even know he is after at that point.
• Team Fortress 2 - The Scout in "Meet the Scout".
• The Legend of Zelda: Ocarina of Time: When Ganondorf meets Link for the first time.

"Pathetic little fool! Do you realize who you're dealing with? I am Ganondorf and soon I will rule the world!"

Webcomic

• When Miranda Deegan shows up at the climax of an early arc in Dominic Deegan, the infernomancer sent to kill her boasts that by coming out in the open, she's just signed her own death warrant. She responds that he clearly has no idea just who he's messing with, and quickly shows just why she's considered one of the world's most powerful wizards.

Web Original

• Yami Marick Melvin says a variant of this to Joey while his Millenium Rod turns into a lightsaber in Yu-Gi-Oh the Abridged Series.

Melvin: You really have no clue what your fucking with here, do you? Joey: Uh, yeah, I'll just be getting out of the way now. Melvin: Yeah thats what I thought.

• • And later, after killing his own abusive father in horrible fashion:

Melvin: The man did not know what he was fucking with.

• Epic Rap Battles of History: Justin Bieber Vs. Beethoven.

My name's Beethoven, Motherfucker, maybe you've head of me?!

Western Animation

• Beast Wars - "Optimal Situation"

Blackarachnia: No, Bowser Boy. You have no idea what you're dealing with.

• In the Ren and Stimpy episode 'Stimpy's Fan Mail', Ren imagines what it would be like to be president:

"What do you MEAN you don't agree with me?! Do you know who you're DEALING WITH?!" [slams down 'the Button' and blows up Australia, laughing maniacally]

• Invoked by Adam DeCobray in G.I. Joe: Renegades to James McCullan, moments before revealing himself to be Cobra Commander.

Real Life

• During the early 1990s in Britain, a traffic policeman stopped a guy speeding in a Mercedes-Benz SL and before taking the ID papers asked sarcastically: "Who do you think you are, Nigel Mansell?" The driver answered calmly: "No, officer. My name is Ayrton Senna da Silva."
• This happened at a University where the classes had hundreds of students in a lecture hall with one professor. During a major exam, one student did not put down his pencil when time was called, but instead continued to write. After collecting the other students' papers, the professor went to the one who continued to work and demanded that he put down his pencil and turn in the test. The student ignored him and finished the test, while the professor got extremely angry. He said that since the student had disobeyed him and insulted him like this, he would be given a zero on the exam. The student stood up and demanded "Do you know who I am?" The professor, not worried in the slightest, yelled back "no". The student then shoved his paper somewhere in the middle of the stack and left the room.