burning bum

When you have a curry, lentils, any spicy food you get severe diarrhea and major runny shits leaving your bumhole burning.

Also see ring sting... ouch

"I badly need the loo! i wish i had shares in andrex - I've got BURNING BUM!!!!!"

by Fudger Packers June 23, 2006

Bum burn

Raging hot fire of the ass. Often happens after eating spicy foods.

"Oh! I've got some nasty bum burn!"

"You shouldn't have eaten that extra spicy taco, dawg."

by l2d6 March 30, 2012