twatty potty Share definition Flag to urinate in a vagina. Last night was crazy! The sex with Colleen was so great, but I had to pee, so I just gave her a good ol' fashioned twatty potty. twatty potty by Swollengenitals March 9, 2007 0 0 Get merch Get the twatty potty mug. Buy Now — $32.95 See more merch