bum sack 

a sack of crap hanging from ones rectum between their legs as to appear to be ones testicles

"tickle me bum sack"

bum sack by Captain BallTouch July 12, 2012

bum sack 

A sack that four or more bums crap in because they have no toilet

paper or plastic and sucks if rips

bum sack by Mich2 September 8, 2005

busier than stink on a bum's nut sack 

By definition, an extremely popular and busy form of private enterprise.

Mohr: Hey Chris, do you want to grab some smoked meat at Schwartz's?

Walken: Let me tell you pal, you'll never get a table in there tonight. That place is busier than stink on a bum's nut sack!

busier than stink on a bum's nut sack by Skeletor's Havoc Staff August 1, 2013

Bumsack 

A sack which hangs from the buttocks of millions of North Americans.

"Look at that gnarly bumsack."

Bumsack by squackerdoodle August 23, 2011

bumsack 

A very rare degenerative cancer-like disease in which the victims testicles are relocated to the rectum.

My nephew, Cornelius... He has a bumsack.

bumsack by The Bumsack Inspector October 18, 2018