knee slapper 

something that is stupid and funny at the same time

Guy 1: So a guy walks into a bar...OUCH!
Guy 2: ROFL THAT'S A KNEE SLAPPER! *slaps knee*
Random Guy: Oh yeah? How bout a face slapper! *slaps Guy 1 and 2's face*

knee slapper by Skullex May 18, 2008

Slappy Jobe 

An illegal sandwich disguised as a sloppy joe, containing urine, cocaine, heroin, Jostwicks, and Boom-Bam-Slam-Jams.

Quick, put that slappy jobe away, the cops are coming my fair fellow!

Slappy Jobe by Borg November 26, 2004

slapping thomas 

When a man intends to use his penis to penitrate one's vaginia, he misses, therefore inserts his unit into the female's asshole. Then she proceeds to shit all over his shlong in surprise.

"David went to put it in her, then Shayna screemed in surprise...Little did he know he gave her a slapping thomas."

slapping thomas by DL Marx August 6, 2006

SLAPOCOPTER 

You just got completly slaped in a game. Usally used by hardcore video gamers.

you guys are so bad. SLAPOCOPTER

SLAPOCOPTER by Nico aM March 29, 2009

ur mockin me arnt you *slaps dick* 

ur mocking me phillipus arnt u *slaps dick*

This is a meme ur mockin me arnt you *slaps dick* yass dud.

ur mockin me arnt you *slaps dick* by Rando dud who luvs gemma October 28, 2018

slappin 

an equivalent of dope, awesome, delicious. Usually used for food, a dish can be "slappin" like it's so good that if someone disputes its awesome godliness they are in for a slappin.
Can also be used in the form of a verb to describe something's slappy awesomeness.

Yo you should head down to Dave's food truck, the pulled pork is slappin

I love eating at that Hawaiian terryaki place, everything on the menu slaps

slappin by bossman773 April 23, 2015

slapping the bag 

A guy masturbating and jacking off.

Noah is slapping the bag.

slapping the bag by mcnuggetdestroyer January 3, 2018