Shumpsterbate 

Shumpsterbate; the combined act of shitting, pissing, and jerking off whilst taking a shower.

Jared: “dude I saw Chad shumpsterbate in the mens shower!”
Carl: “uuughh what the fuck?!”

Shumpsterbate by Shumper August 4, 2022

humpsterbate 

the act of keeping your hand stationed in a still circular pose around your cock while he thrusts his hips forward, providing the same hip motion as sexual intercourse.

Rod The Bod found he ejaculated quicker whilst humpsterbating

humpsterbate by ryan December 1, 2004