Internal Combustion

A masterbation technique in which the user takes a shower while masterbating. At the exact point of climax the user simultaneously switches the water to ice cold. Creates an extremely relaxing effect.

I preformed internal combustion in the shower and I feel so relaxed!

by Solcomets October 1, 2010

Internal Combustion Engine

Its an engine you moron

"Thats an internal Combustion Engine"

by Nelsy fellow February 20, 2021

internal cumbustion

when cock explodes inside your pussy, filling it with jizz

My boyfriend is internal cumbustion engine. He can cum five times in a row , without pulling out

by dildo777 March 28, 2022