A Humping Party is when you and a whole bunch
of friends (male or female) just start humping each other and other friends, random
people, etc. While doing it you've gotta yell out "Humping Paaaaaaaaaaaaaaaarty" , to make it official.
Guy 1: Yo, Lisa is looking sexy today
Guy 2: Then lets
throw a Humping Party
1 and 2 walk over to Lisa and hump
her in a friendly way*
1 and 2: HUMPING PAAAAAAAAAAAAAARTY.