A condition caused by excessive lint (commonly present in a new pair of underwear) clinging to the scrotum after the first use. The fuzz will fuse with ball sweat or Fermunda Cheese giving the appearance of an African-American's scrotum.
Trisha was disgusted at my Black Sack! She didn't believe that it was from my new pair of Fruit-of-the-Loom boxer briefs.
by RealTexarkanaTits July 12, 2013
Two guys penetrating one girls vagina and ass at the same time and their balls slap against each other
by ling69 November 10, 2013
by Mahatma Pahnts June 25, 2007
An excretion of a sweaty thick substance from the sack area that smells sour. It can be found by twiddling your index and middle finger on your sack after not showering for days.
I had so much sack oil I could have swabbed the ball deck and made a candle. So much scrotum scum oil.
by swe@tymrnassy September 19, 2013
by suicidebomba69 January 23, 2011
A reference to a scrotum that is very loose and elastic-like. Could occur in warm bath water or any other situation in which your privates are very warm and stationary.
by hotcarl9211 May 03, 2010