Bird cage

When someone's chest is in lack of muscle. Very skinny person, to the point, you can see his/her ribs.

You need to pump that bird cage you.... You are a weak private and you need to pump that bird cage of yours.

by Spc Lopez July 11, 2010

bird shit

Racist term to describe a person of white and black decent.
Such as bird shit is white and black.

Mixed Guy: "I can say cracka and nigga"
Other Guy:"Shutup bird shit"

by jus4kiks May 12, 2010

Bird Dogging

When as a medical student on surgery rotation, you are sent by your resident to watch their patient in pre-OP until they are taken back to the OR, upon which you page the resident.

"Jerry, why don't you go on down to pre-OP and do some bird dogging on Ms. Smith and let me know when she gets taken in for her hysterectomy

by KU Scut Student July 3, 2011

bird bump

The bump that you see on good looking girls that wear leggings or yoga pants. The bump above the vagina on the center pelvic region.

This is something you find on fit/thin/skinny girls.

If a girl is lying flat on her back the area kind of looks like an island for a stork/seagull to land on. Hence the name Bird Bump!

girlsinyogapants(dot)com/2011/bird-bump/

Check out the bird bump on that chick in yoga pants!

by diabeetus316 February 23, 2011

bird out

A dance move involving engaging the arms in a flapping motion and bobbing the neck in a birdlike fashion.

Have you ever heard a song come on that made you just want to BIRD OUT?

by Neilette May 5, 2011

bird watching

Birdwatching, or birding, is a form of wildlife observation in which the observation of birds is a recreational activity or citizen science. It can be done with the naked eye, through a visual enhancement device like binoculars and telescopes, by listening for bird sounds,12 or by watching public webcams.

I want to go to the British lake for bird watching.

by aminsep May 4, 2018

Bird in the sack

The bird is semen. When the semen is still in your sack before ejaculation

I try to keep the bird in the sack as long as possible when banging my girlfriend

by Dumb fucking asshole big cock June 11, 2018