Definitions by Pink Clay doh

Erpa Derp

A saying, spoken out loud, while acting as a slow or mentally challenged person when someone makes an incorrect action or is unwillingly blind to something obvious.

Guy1: WHERE IS HE!?!?!

Guy2: In front of you in the bushes. ERPA DERP!

Erpa Derp by Pink Clay doh April 6, 2010