"Kevin did da flop-flop at da playground... It was so small, it aint even look like it was movin!!!"
by Destinee May 13, 2005
The embarrassing(and sometimes painful) act of your balls hitting against your thigh or leg while walking or running
by Brett50Cal July 13, 2012
Sit: havr you sern my sister
Jason: yes shes very nice
Getrenv: yes shes smoking hot, i want to flop flop nigga her.
Jason: yes shes very nice
Getrenv: yes shes smoking hot, i want to flop flop nigga her.
by SitInYourRoom July 05, 2020
by Jonnnnnnnnnn April 18, 2009
by Littlest pet shop PUffiN October 02, 2020