slanty bum

When a female has straight back with little to no ass at all. The ass appears to be one with the thighs.

Judy had a big booty but Sarah has a slanty bum.

by byrdmanjenkins April 4, 2015

Bingo bum

When you have been sitting down for so long that your bum gets sore or numb. Bingo bum!

Cleo! I've been sitting for so long I've got Bingo bum🍑

by Saltyytats 🔪 January 25, 2019

Bum Crumbs

The Bits of dried poop that hang from ass pubes that some people pick at.

This nigga don’t wipe he got bum crumbs😂

by IsThisNameTaken?LetMeCheck October 13, 2018

Bum Sauce

The liquid that is held between the cheeks of your ass that smells like a mixture of sweat and shit.

Person 1: Dude, I was sitting down all day, and I've accumulated some Bum Sauce
Person 2: EEEWW!! THAT'S GROSS! AIN'T NOBODY WANNA HEAR ABOUT YOUR BUM SAUCE!!

by Jeffery Deadstein May 12, 2020

Clay bum

When you wipe your bum and there is a clay like matter on the paper.

I was wiping for ages last night. Turns out I’ve got a bad case of clay bum.

by Fjdb565656 March 30, 2020

bum udder

A man or woman can get these by eating too much of the wrong stuff........ You guessed it, piles. Doctors will suggest more fibre and fruit in your diet.

Simon "I can't sit down" Brad "you must have bum udders"

by RAWSTAN August 26, 2015

Bum rat

A person who is being really annoying

damn noah is being such bum rat today

by I will kill April 9, 2020