A sack which hangs from the buttocks of millions of North Americans.
by squackerdoodle August 19, 2011
Get the Bumsack mug.
A very rare degenerative cancer-like disease in which the victims testicles are relocated to the rectum.
My nephew, Cornelius... He has a bumsack.
by The Bumsack Inspector October 18, 2018
Get the bumsack mug.