(noun). one who is crummy, trashy, dirty, old, etc. often characteristic of the Los Angeles rock scene.
by Linzzz March 19, 2008
by JTOTHEHIGH October 06, 2016
by Tolands July 04, 2011
by BlowyGay May 10, 2010
by mack January 19, 2004
In "con speak" its what happens when someone accidentally speaks out of turn and ruins the gameplan.
I was going to sneak out early and go over to Donna's but she crummed the play when she told all the guys I'd rather be with her on our poker night.
by Gimbo is all in. February 25, 2008
1. This is the shit that remains in the toilet bowl after it as been mal-flushed. It is not a plesant sight for the next person.
- "Ew! There are some Toilet Crums!"
by CrunkMonk3y January 02, 2012