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When someone asks for another BWH number, it is usually the measurements of their bust, waist, and hips. The number is used to tailor dresses and shirts to the right size. And by some smartasses who think they can determine how a girl looks with those measurements.
Male Fiance gets off phone: "Hey babe, your wedding dress tailor lost the BWH numbers, you want me to look for the tape measurer?"

Smartass: "Hmmm, Kim Kardasian has a BHW of 38-27-38, I guess this 35-30-41 girl is as sexy as her. SCORE!"
by TAYLORwebb June 12, 2011