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1.
A house party that starts immediately after bar close.
The bartender just called last call... does anyone know of an after bar?
What happened last night? I remember going to the after bar, and then I pretty much blacked out.
by JFF July 05, 2006
 
2.
Party after the bars close, where the drinking continues until the sun comes up.
We are having a huge afterbar tonight.
by wisconsin September 29, 2004