look up any word, like dirty sanchez:
 
1.
straight up slappin weener instead of a normal handjob. no cum. no smile.
-Have you seen mac lately?
-No dude, ever since kim gave him that fierce slapjob hes turned into a bag of shit.
by Zelda da asshole crusher January 10, 2010
 
2.
When a girl bitch slaps an erect penis to the point of ejaculation.
"I've been a bad boy, I'm in serious need of a slap job"
by albinoavenger December 12, 2011
 
3.
To rapidly slap ones cock with brisk quick hand motions, banging the genitalia against the inner thighs till the penis ejaculates. The slapping continues till the penis is a raw bloody phallus.
Brian recieved a jolly good slapjob from Larissa till his bloody cock had cum more then enough to fill a goats ass.
by Mr. Mayonasse August 16, 2007