Shum 

Masturbating while taking a shit.

Comes from the words shit and cum mixed together.

“Hey bro where are you going?”
“I'm going to the bathroom to take a shum.”

Shum by Bobismybro232 August 16, 2020

Shum 

to shit and cum simultaneously

“Im shumming!”

“Im about to Shum!”

Shum by greek dictionary January 17, 2021

shum 

a mixture of shit and cum, created by a disturbed soul on twitter

"what would you do if someone jumped over you and shummed on top of your head"

shum by sojudreaming February 18, 2021

Shum 

A combination of shit and cum

Banks seriously!?! You shummed on the carpet, again? You can’t just leave your shit and cum everywhere.

Shum by ShumMaster August 13, 2021

Shum 

You can say "shum" after a person coughs to acknowledge that you are not bothered by the cough, and that you hope they are okay

It is pronounced: sh-UM

It is inspired by the calming "uhm" sound that is soothing to others when they are coughing

John: *coughs*
Henry: Shum to acknowledge John's cough

Shum by rootone March 16, 2022

shum 

mixture of shit/cum after a good assfucking

Joe's mother caught on to his homosexuality the summer he was home from college and she noticed a shumstain on his briefs.

shum by david rauch January 7, 2006

Shum 

To shit and cum at the same time; a solo blumpkin, if you will.

Everybody run, Sammi's going to shum like crazy!

Shum by Not A Facebook Friend August 30, 2011