Beaver Dam 

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.

Beaver Dam by Acceleratedbeats December 12, 2003

beaver dam 

the piece of skin between the vaginal opening and asshole

The woman's beaver dam is swollen from sexual intercourse.

beaver dam by sara p January 17, 2009

Beaver Dam 

n: A large gathering of Lesbians

Guy 1: (standing in line at the bar) What is the hold up?
Guy 2: Oh, God! There's a beaver dam ahead!

Beaver Dam by narwhalbattle March 13, 2011

Beaver Dam 

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.

Beaver Dam by Tree303 November 9, 2013

beaver dam 

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.

beaver dam by JT October 4, 2004

Beaver Dam 

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!

Beaver Dam by Jason Ho June 28, 2008

beaver dam 

(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)

beaver dam by A friend and his beaver dam December 28, 2007