slappy balls 

The sound of when you sit and your balls slap down on your legs making a "slappy" noise, or when "doing the dirty".

Guy: Jeez it's hot out here! I've been gettin slappy balls all day!

Girl: Maybe you sould go sit in the A/C so your nuts don't look like an old mans.

slappy balls by TheMexicangrito October 5, 2012

Slappy Nappy 

Take an overfull cloth diaper, put in microwave on high for 5 minutes. While contents are still scalding hot, press into the face of an unsuspecting friend and scream ‘SURPRISE!!!’

Bill lost his sight and required skin grafts from 3rd degree burns on his face after his mate T-Bone gave him a Slappy Nappy!

Slappy Nappy by Red monster boy June 18, 2023

happy slappy 

To pleasure oneself until you orgasm, or being wanked off/ pleased by someone else

Jessie gave John a happy slappy during class... What a slut

happy slappy by Langston Doobs October 10, 2016

Slappy McBluelips 

An alternative name for Alex Rodriguez (A-Rod)after his disgraceful attempt at cheating in game six of the 2004 ALCS versus the World Champion Boston Red Sox.

Slappy McBluelips aka A-Fraud slapped at Arroyo with his hamburger-helper hands costing the MFY the series.

Slappy McBluelips by Derek Jeter January 14, 2005

Slappy Cup Death Round 

Slappy Cup Death Round is an intense round of the drinking game Slappy Cup. Find an ally, replace the typically plastic cups with glassware, and get to slapping.

Tips: Wear closed toes shoes, don't expect any of the glassware to survive the round, and seek out a homeless person in the ally to record because as you can imagine, death rounds are epic. Be kind, pick up the pieces.

Official Slappy Cup Rules here.

When Ashley slapped the shit out of Sara's cup and it shattered all over the ally everyone screamed, "SLAPPY CUP DEATH ROUND"

Slappy Cup Death Round by YOLO 90 March 11, 2013

Slappy Chinner

When a you are getting oral from someone and start fucking them in the mouth so hard, the balls start hitting their chin.

Guy: Man, last night I was out with Melanie and we did the slappy chinner.

Slappy Chinner by Lando Pepper July 23, 2014

Slappy Ending 

When a male ejaculates into his own hand, and slaps his partners face with the cum filled palm.

I bet when Christopher Walken is done banging Melissa McCarthy, he pulls out, finishes himself off, and gives her a good hard Slappy Ending

Slappy Ending by TheSlappening November 15, 2016