When a man takes a dump in a urinal so large that it clogs it.
Yo, I feel bad for the poor sap that has to clean up that beaver dam that Tom left in the first floor bathroom.
by Acceleratedbeats December 13, 2003
Get the Beaver Dam mug.
Guy 1: (standing in line at the bar) What is the hold up?
Guy 2: Oh, God! There's a beaver dam ahead!
by narwhalbattle February 27, 2011
Get the Beaver Dam mug.
When someone intentionally or unintentionally prevents a woman from hooking up with or having sex with another person. The female equivalent of being "cock blocked".
I saw this really cute girl and my friend introduced me as her girlfriend when she meant her girl friend. She was a beaver dam.
by Tree303 November 10, 2013
Get the Beaver Dam mug.
when a room mate takes a crap and decides to leave a present for any unsuspecting suckers.
I left you a beaver dam. Have fun with that.
by JT October 4, 2004
Get the beaver dam mug.
To stop your friend from having sexual relations with an ugly chick!
Yo, Jackson, you have to make sure the beaver dam goes up if I get really drunk and want to fuck Sam!
by Jason Ho July 11, 2008
Get the Beaver Dam mug.
(noun)- A friend who acts as a buffer between you and an unattractive female (see: ugly ass bitch). Plural- beaver dams

(verb)- to block an unattractive female from hooking up with a friend upon his/her request. Past tense: -med
Damn, to keep that ugly drunk bitch from fucking me, I need my friend to be my beaver dam. (noun)

Was I just beaver dammed by that guy? (verb, past tense)
by A friend and his beaver dam November 29, 2007
Get the beaver dam mug.