A very long penis that dangles below the knees and slaps the calves when running. May also be used in the plural form to describe low-hanging testicles. See calf slappers
As I ran beside Brad during our workout today, I heard a pitter-patter below his knees. He must have a real calf slapper in those sweatpants!
by CalfSlapper October 26, 2015
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calf slapper
• Calf - cutter
• Calf-Down
• Calf Explosion
• calf fetish
• calf flexing
• calf game
• calf gap
• Calf Grab
• Calf Horr