What is Senior 15?
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A sister phrase to the popular "Freshman 15" that refers to how fat Senior girls get due to excessive partying and beer drinking during their final year in college.
Guy #1: That Holly girl used to be hot right, what happened to her? - Guy #2: She let herself go and gained her senior 15 like a fat slob, what a shame.
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Why The Hell Are You Reading This?..
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a contest to see who can giggle the most
After Mason challenged me to the giggle fight, I already knew i would win.
See giggle, fight..