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.
Girl: Maybe you sould go sit in the A/C so your nuts don't look like an old mans.
by TheMexicangrito April 30, 2012
by Langston Doobs January 31, 2016
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!
by Red monster boy June 19, 2023
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.
by Derek Jeter January 15, 2005
When a you are getting oral from someone and start fucking them in the mouth so hard, the balls start hitting their chin.
by Lando Pepper July 23, 2014
I bet when Christopher Walken is done banging Melissa McCarthy, he pulls out, finishes himself off, and gives her a good hard Slappy Ending
by TheSlappening November 15, 2016
another word for a handjob
by Tiny...Dick May 21, 2017