Definitions by CowNiggaBalls

J-Slap 

When you ejaculate into your hand and slap somebody else with the hand you ejaculated into across the face.

"If you dont stfu im going to J-Slap you."

"Dude Amanda didnt shut the fuck up last night so i had to J-Slap her."

J-Slap by CowNiggaBalls November 25, 2011