A man who was born a genius, but since no one could compete with his brains went insane out of boredom and started killing people. Then he met Batman, and found someone who actually understood him, who <i>completed</i> him and <i>didn't laugh at any of his jokes</i>. So now he tries to screw Batman's life up, because Batman's just too much damn fun.
"I believe what ever doesn't kill you, simply makes you stranger" - The Joker.
by Piper [The Bandit] December 1, 2008
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Someone who's actions or speech make you laugh; someone who is acting or saying something idiotic
Jimmy: ay yo you know that Johnny asked Jenna out with a coupon from McDonalds right?
Timmy: wait actually?
Jimmy: ye

Timmy: lmaoaoaoaoaoaoaoaoaoao what a joker
by James Timothy III November 4, 2021
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When going down on a chick, you notice the tampon string, you clench it with your teeth and vigorously shake the bloody tampon back and forth, leaving bloody marks from ear to ear. After spitting the tampon out, you look her deep in the eyes while saying, "Why so serious?"
I never heard from my girlfriend again after performing The Joker.
by 289rawdogs February 22, 2015
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To laugh even when it isn't funny; also, to laugh when no one else gets your joke....
Bob sure laughs at his own jokes a lot...
yeah, he's 'jokering' it
by Tfurth July 31, 2018
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Refers to a funny / humurous person. Or a person with a good sense of humour.
by the big G January 26, 2005
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Batman's arch enemy and a major headache for The Caped Crusader. The Joker could give even Superman a major headache!
It's The Joker up to his old tricks!
by pentozali July 28, 2008
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having an unresistable urge to try and imitate Heath Ledger's Joker after watching the Dark Knight
Guy #1:"A little fight in ya, i like that"

Guy #2:"Dude, you got a bad case of Jokeritis"
by themagicman August 15, 2008
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