Backwater Mud Motor

The act of motorboating someone's butt cheeks as they have diarrhea.

If you two are gonna Backwater Mud Motor, at least clean up after.

by Archetyp0 June 7, 2025

Backpack full of Bitcoin

A descriptor for a shady kid

“Do you see Mason over there? He’s for sure got a backpack full of bitcoin”

by Shakespere4Real July 25, 2025

extreme backpacking

When you put random inanimate objects in your partners butt for fun, with no lube.

Dorothy and I are going to try out some extreme backpacking this weekend. Would you like to be apart of the insertion?

by Matt42490 May 4, 2018

Furry backpack

An unkempt female arsehole

It was her time of the month so I stuffed it in her furry backpack instead.

by Tomron Coolman September 18, 2018

Jamaican Backpack

In order to smuggle marijuana an individual places a bag of weed in another's anus and then pounds it in with his penis.

In order to get weed out of the Caribbean, Turbo gave Austin a Jamaican Backpack.

by ajmurphy October 19, 2018

shark backpack

Code for a woman's vagina.

Last night she showed me her shark backpack.

by lookin4nub December 5, 2018

Musty Backpack

A copious vagina which is moist and musty from a hard day pounding the streets.

Awh that lass from the pub had a right musty backpack!

by Krinthor April 12, 2019