Top Definition
A great way to clear some extra friends from your facebook profile, by deciding if they're worth wishing them a happy birthday or not.

When you see on Facebook that it's someones birthday they are automatically up to the test, and you decide to either pass them, or flunk them, according to how much you care for them:
1. They pass - you wish them a happy birthday by posting on their facebook wall.
2. They flunk - you unfriend them.
Jerry: Why did you unfriend Mel?
Kathy: She just didn't pass the facebook birthday test...

Jon (on Bill's facebook wall): Happy birthday man! Looks like you passed the facebook birthday test! LOLL
by BLULUp January 20, 2012

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