2
Means worthless.

"According to Robert Claiborne in Loose Cannons and Red Herrings, it refers to city streets as they were before cars. "When I was a youngster on the streets of New York, one could both see and smell the emissions of horse-drawn wagons. Since there was no way of controlling these emissions, they, or the undigested oats in them, served to nourish a large population of English sparrows. If you say something's for the birds, you're politely saying it's horseshit."
Calling shitty generic deathcore bands 'progressive death/grind' is for the birds
by TehGrey August 07, 2008
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3
A term to describe something you want nothing to do with.
"Hey, can you get some blow?"
"Nah, I don't fuck with that, that shit is for the birds."
by AC Sativa September 20, 2016
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4
A phrase used for anything whether it be food or drinks that is for everyone one to pick at.
Mike: Hey Larry who's chips are these?

Larry: it's for the birds man

Mike: oh sweet thanks .
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