the layer of cake left on a cake pan when the cake is gone, sometimes scraped and eaten with a butter knife.
After the cake was gone we grabbed a couple of butter knifes and ate the "cake scum" It was the best part..
by batmon July 16, 2009
Get the Cake Scummug. Someone is scummy and cunty. May be a person who is arrogant or someone that cheats on their fiancé with a hoe.
by supa150 October 3, 2016
Get the Scum Cuntmug. by hamheaven January 10, 2014
Get the scum plattermug. Any person in connection with either a) Pretending to have have money and not squeeching off the dole or b) being bogan scum. Scum should be totally avoided and killed where possible. They may attempt to get you pregnant at 15
by PseudonymNoob November 26, 2013
Get the Peasent Scummug. 
The algae-like film that develops between the underside of large breasts and the female's upper stomach. Easily identifiable by the dank smell and slimy film that develops over time
Lizzy has huge knockers, but no guys want to go near them because she can't get rid of the boob scum stench for the life of her!
by jrogers August 1, 2008
Get the boob scummug. by major_delmac February 28, 2005
Get the scum bummug.