by Heisenberg308 August 3, 2024

by AllHaleBlaise April 16, 2021

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

by bruhmoment1254 May 5, 2020

The 'Macca Slapper' is a unique technique which is hard to master. Founded by the great Macca Slapper himself, you must thrust your junk up and down creating a clapping effect from your nut sack and penis slapping against your skin. This technique is for men only.
My boyfriend can do the Macca Slapper, he is way better than yours!
My Macca Slapper sound makes the whole room vibrate.
My Macca Slapper sound makes the whole room vibrate.
by Yatü August 27, 2018

by Unifart April 2, 2021
