When you put peanut butter on your hand and slap a guy on the face leaving a handprint of peanut butter. Invented by Andy Milonakis.
by DenisK August 18, 2007
Get the peanut butter slapmug. by Big daddy d January 30, 2014
Get the peanut butter bitch slapmug. by Optic grapefruit August 27, 2016
Get the peanut slapmug.