The act and/or result of "going down" on a girl in a very passionate/aggressive manner while she is menstruating. Leaving a smear of menstrual fluid on the sides of your cheeks that resembles the Joker's face makeup
1. Bobby just went wild down there, even with my heavy flow. After he was done, he looked up at me with a Joker smile and I gave him a confused look and then he said to me,

"Why So Serious???"

2. Oh wow, I would love to give her a mean Joker smile.
by Cydonian Knight September 19, 2009
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When a man motorboats a woman while she is on her period.
I wore my joker smile with pride, knowing that a real man pleases his woman no matter what day of the month it is!
by The Hatrid December 31, 2019
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When a man "cock slaps" another person on both sides of their face. Leaving two lines up their face, resembling the smile of the joker from Batman.
I think that girl that had those bruises on her cheeks got a joker smile.
by C.L.C. October 25, 2011
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The smeared red lips resulting when one person performs cunnilingus on a woman during her time of the month. Resembles "the Joker" from Batman.
I was so drunk I didn't realize I ate her bloody snatch until the next day when I noticed I had a joker's smile in the mirror.
by tim's taint December 21, 2004
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When you eat a girl out while shes on her period
Last night i got a joker smile cause i didnt know she was on her period.
by G.Duffy November 14, 2007
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The joker’s smile is a sex move in which you have sex with a woman while she’s on her period. Right before you’re about to cum you pull out and nut on her face. You then take the palm of your hand and smear it to cover her entire face. You then take your dick with period blood on it and wipe it on her lips and up the cheek to resemble the joker’s makeup.
Yo! I just hooked up with a chick and did The Joker’s Smile on her! She was so surprised!
by Rickytickyman June 15, 2023
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The result of putting a knife in someone's mouth and then slicing both of the victim's cheeks so that he'll look like the Joker(Batman's arch-nemesis), thus putting a permanent clown's smile on his face.

The Joker himself is known for doing this to his victims in the movie The Dark Knight.
If you dont stop laughing at your own stupid jokes, I'm gonna give you a Joker's smile bitch!
by Terminus_Est August 4, 2008
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