Top Definition
the weekend you get your fake id. drinking and debauchery abound. anything goes. once it happens, you never stop experiencing the aftermath, good or bad.
My friend hooked up with a bunch of guys during birthday weekend; that week he found out he had herpes.

On birthday weekend, I saw two girls making out in front of me at a bar; then my friend's wallet got stolen at the bar.
by schwasted123 March 06, 2011
The first weekend after one's birthday when one has a birthday during the work week. This is the time when most activities planned for celebration occur.
I can't fucking wait until my birthday weekend so I can get drunk.

Oh shit! That's happening on my birthday weekend. Perfect excuse to go!
by Andrew "Party Hard" W.K. January 20, 2010
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