Definitions by JDJakieD

coastergasm 

The feeling you get when a rollercoaster drops and you get that weird feeling in your crotch.

BRO 1 "I went on Scream, and the drop gave me such a coastergasm."
BRO 2 "I almost exploded from that coastergasm."

coastergasm by JDJakieD July 22, 2012