faecal matter in one of its more fluid states, such as diarrhoea
her sheets were covered in bumsauce
by Love February 09, 2005
Top Definition
A total bummer. Something super lame.
Oh damn little laxer hitting mad pipe. Total bum sauce man.
#lax bro #bummer #lame #shit #sucks.
by superkoolaid17 April 23, 2010
The slightly moist feeling between one's buttocks, specially around the anus generally felt on a hot day, after a day of heavy bum burping or after exercise. Bumsauce is not mearly sweat but actual secretion from the bum and is normally quite smelly. Also called sebum.
Note: this is NOT the same as the squits.
My goodness Mavis, you've got quite a beefy arse this evening. Best you wipe off the bumsauce with your knickers before I go down on you.
#bumsauce #bum sauce #sebum #beefy arse #smelly bum
by Steven D November 19, 2006
Major digestive issues also known as diarrhea.
Dude 1 – Man I got wicked Bum Sauce!

Dude 2 – Well fuck man that’s what you get for eating pizza out of the trash! God go buy a cookbook!
#diarrhea #squirts #shits #shitting #sick
by Somecrazyfemmegirl September 06, 2006
When you cum in the bum and some muddy bum sauce comes out
"Oh I gave you some major bum sauce didn't I Jordan"
by The King of Bum Sauce April 30, 2016
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