when a male swings his junk between his legs fast enough to produce a "slap" sound. The maneuver is most effective in a North/South fashion. East/West will do, but it's not as loud and hurts your balls.
never do the slap in front of your girl after taking a piss.
It's not a party until a someone does the slap for the ladies.
It's not a party until a someone does the slap for the ladies.
by jrzdvl December 7, 2006
Get the the slapmug. by metal gear ray July 4, 2005
Get the slapsmug. by t barber April 12, 2006
Get the slappingmug. by NinjaPleaaasssee May 9, 2011
Get the Slapsmug. 

