Pumpa Slap Share definition Flag A Pumpa slap is were you slap somone who either adding insult to injury you or jus annoys you, before you slap them say "IM GUNNA PUMPA SLAP YOU BLED" dave : " hahaha, u failed ur exams" phil : "IM GUNNA PUMPA SLAP YOU"*SLAAAPPPP* Pumpa Slap by PeRU.graff September 23, 2009 Get the Pumpa Slap mug.