Top Definition
(n.) 1. The splash of tainted water onto one's buttocks after excreting fecal matter into the toilet bowl.

*It can also be used as an exclamation of surprise.
John: Ew, what's that smell?
Jennifer: It's the smell of my potty smash!

"Oh, potty smash! I wasn't expecting to see YOU here!"

by StinkyKabob August 03, 2008
7 Words related to Potty Smash

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