SquishySaturn Share definition Flag To cover your penis and/or your partner with jell-O and repeatedly slap them in the face with you penis.. dude, last night i gave my girlfriend a wicked SquishySaturn, we used cherry flavored Jell-O SquishySaturn by The SquishySaturn March 11, 2009 0 0 Get merch Get the SquishySaturn mug. Buy Now — $32.95 See more merch