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The act performed right before climax of knocking a girl unconscious with a well placed punch and ejaculating on her face after the fact. When she wakes up she will have a crusty layer on her skin as well as a headache. Named for boxing legend Rocky Balboa.
She was blowing me and right before I finished I dropped her with a left and finished on her face and hair. It was my first ever Crusty Balboa!
by CupOHotCarl April 21, 2011
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