A sexual act where a man or woman pees at the top of their partners butt crack, allowing the pee to run down their crack and flowing over their butt hole, aka your gray raisin.
by ChubbyBunny985 November 11, 2019
When your fucking from behind and insert mentos and diet soda into the other persons asshole. Remove your duck and watch the volcano erupt.
by The river raisin volcano December 16, 2020
Terry and John both had river raisin rainbow mustaches from all the skittles in each others assholes
by Natsfan29 December 20, 2020
When a male is receiving oral sex and about the time he cums he grabs his partner by the ears and cums til it comes out the other persons nose.
Dave: I gave Jackson the river raisin snot rocket the other day while he swung his jazz hands around and snot rocketed all over my dick.
by The river raisin volcano December 21, 2020