Definitions by bumfountain123

bum fountain 

when you put mentos up your bum then proceed to butt chug coca cola, then creating a bum fountain

friend 1: i have mentos in my prison wallet and am proceeding to pour coke into my rectal cavity
friend 2: oh no your anus is exploding with coke and a nice menty smell creating a bum fountain

bum fountain by bumfountain123 December 2, 2019