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1.
When someone cannot successfully spit into a gaping asshole.
Michele was trying to spit in Jeffrey's gaping asshole and he she missed and spat right dab in the middle of his taint completely missing his gaping asshole. Michele is such a boo whore.
by whatevs2 July 28, 2012
 
2.
The next fad of todays generation. While in the 60's they had cannabis, in the 00's we have Boo Whore.

It was first coined in the hit movie Mean Girls, although unfortunately not by Lindsay Lohan as we all wished. This does not ruin the fun and frolic of the saying however, and nowadays it is seen as a good gesture to use this phrase whenever you see fit.
1) Boo Whore! - as a greeting
2) Boo Whore! - as a threat
3) Boo Whore... - as a way of expressing ones tears
4) Boo Whore! - as a way of shooing off unwanted ethnics
5) Boo whore? - as a way of questioning God almighty
by TGSMaverick January 11, 2006