A slimy rotten, stinky, dufus of a person whom you hate with a passion.  A dirtball whom you'd rather shoot than spend any time with.
by Drew Switala August 18, 2005
Get the scumballmug. A spirit of adventure captured in an annual crazy cross-Europe rally, over a mad weekend, in cars that all cost less than £500. Think  the Whacky Racers on a Stag Do, multiplied by ten. Oh yeah, and it's all done for charity (you know, for kids?).
by Dan 'Freddy' Gadd April 23, 2008
Get the scumballmug. The act or belief that being a scumball is good. The belief that when YOU behave like a scumbag it count, that you somehow are exempt from being scum.
by Not Russell May 17, 2010
Get the scumballismmug.