The glorious urination one engages in shortly after an orgasm. It is said to rival that of intoxicated pissing.
The party last night was amazing. I had, like, fifty beers! This chick even blew me! When she was done, I had to pee like a racehorse, so I staggered into the bathroom, had an after piss, and it was THE MOST AMAZING THING EVER.
by pupukachu March 11, 2010
Get the after piss mug.
When someone is done peeing, and the pull their pants up, but some pee still leaks out.
Girl: Johnny, did you pee your pants?

Johnny: Nah, just some after piss
by likeaboss900000 February 17, 2014
Get the After piss mug.
While having a number two, it's the second piss that let's you known you are done.
"Just had a quality dump, finished off with the after piss!"
by MrPabloE July 1, 2022
Get the After piss mug.