When a guy cums on his hand and slaps the girl's ass.
Man: Dude, i just jismslapped my girlfriend last night.

Other man: That's awesome dude!
by Asian guy February 13, 2012
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When a man cums in his hand, then slaps his girlfriend's ass. It's a loving gesture between 2 consenting adults.
Go on upstairs and jismslap my daughter!
by Salish Seaman February 9, 2012
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