Noun. To ejaculate in ones hand and them slap their girlfriend/wife/partners ass with said jizz covered hand.

popularized in 2012 by the comedy sketch show "The Station 2" on youtube.
Hey hun tonight I'm totally going to jismslap you.

Or

dude, you wanna jismslap tonight?
by Pandaman3141 January 25, 2012
Get the Jismslap mug.
the act of cumming into your hand and slapping your partners butt during sex (preferably in the doggy-style position)
bro 1: bro....i jismslapped my girlfriend last night. It was so hot....

bro 2: what a boss.....
by jeremy lin February 9, 2012
Get the jismslap mug.
Cumming in your hand and slapping your girlfriend's ass with it.
He's so good at jismslapping.
by kevin0302 February 8, 2012
Get the jismslap mug.
The acting of ejaculating on ones hand and affectionately slapping your loved one on there posterior.

From www.youtube.com/watch?v=bCkc5rcSOwoac
I was making love to my girl and finished her off with a jismslap.
by slappydabutt February 10, 2012
Get the jismslap mug.
When you cum in your hand and slap your girlfriend's ass. It's a loving gesture between two adults.
Dude 1: Guess what bro!
Dude 2: What?
Dude 1: I jismslapped my girlfriend!
Dude 2: Finally!
by ricksterrrbruh February 10, 2012
Get the jismslap mug.
When a man ejaculates into the palm of his hand then proceeds to slap his fair lady's ass.
"Hey baby, I'm gonna jismslap you"

I just jismslapped my girlfriend. It was awesome.
by dirtyscrabble101 January 25, 2012
Get the jismslap mug.
When you cum in your hand and slap your girl's ass.
"I jismslapped that girl's nice ass"
by p00py February 9, 2012
Get the jismslap mug.