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1.
A B.I.G (Bitch Is Gone) Party is thrown to signify and celebrate the end of a realtionship or marriage to a Bitch. It's like a bachelor party but on the exit side!

See www.bitchisgone.com and www.facebook.com/bigfanpage
Thank God you are done with that Bitch...we are throwing you one B.I.G Party!
by paybacksabitchisgone August 09, 2010
 
2.
the fattest girl at a party.
Dude, look at the chick.....she's huge!!!

I know. She's a "Big Party".
by mrtuffstuff February 09, 2008