Used as an expression to accompany giving someone the finger, telling him or her to literally consume it; therefore, you are in essence symbolically telling the person to suck dick.

This was used to great effect in John Waters' film "Pink Flamingos."
"Eat the bird, bitch!" (from the aforementioned film)

Jim: If this party isn't fun, I'm gonna be pissed.
Tim: Shut up, Jim.
Kim: Yeah, Jim. Eat the bird.
by spike bradley August 8, 2009
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An interjection similar to "get lost" or "quit it"

Entomology: Comes from a story on TardBlog where a retarded boy eats an embryonic bird and later exclaims "eat bird" - it's usage, however, has little to do with the entomology.
Random guy: Hey baby, let's see those tits!
Girl: Eat bird.
by Clive Braddock June 9, 2005
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An interjection similar to "get lost" or "quit it"

Entomology: Comes from a story on TardBlog where a retarded boy eats an embryonic bird and later exclaims "eat bird" - it's usage, however, has little to do with the entomology.
Random guy: Hey baby, let's see those tits!
Girl: Eat bird.
by Clive Braddock June 22, 2005
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Oh, her? She's a cheap date. She eats like a bird.
by D-Bruch August 9, 2009
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