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1. A measure of determining sexual scoring prowess calculated by dividing total bases(1B=kissing, 2B=touching, 3B=oral, 4B=Sex) by the number of dated partners.

2. In baseball, a statistic to gauge power by dividing total bases by at bats.
After five dates and only one boob touch, John finished the 2010 dating season with a paltry .200 slugging percentage. However, he slugged a whopping .886 in for his company softball team.
by kris takahashi April 15, 2010
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