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1. 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.
2. bird cage
A shelf, or part of a shelf, in a supermarket, where reduced goods are displayed.

So called because they are going "cheep cheep"!
Customer Service Assistant: "Madam, you'll find baked beans going cheep for 5c a can, the bird cage"

Customer: "Bird cage?"

CSA: "Because its going cheep cheap!"
by Kerb Nov 27, 2004 add a video
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