frat sludge 

the substance comprised of many unknown variables accumulated on the frat floor causing infection or death if not washed off immediately.

Aaron's head was covered with frat sludge after being tea bagged with paint!

frat sludge by baker_292 April 29, 2008

Frat Sludge 

The black tar-like substance that scars the floors of your local fraternity. Frat Sludge is composed of beer, blood, sweat, seamen and hard work.

Mother of a Democrat!!!! I do declare, this Frat Sludge is very thick this fine evening!!

Frat Sludge by Merry-am-WebStar October 23, 2011