GAJ-derp Share definition Flag Grizzly Autistic Joe - derp. The derp is just a phrase with no meaning besides derp and hitting ur hand against your chest in a stupid fashion. GAJ-derp casts confuse ray! But enemy casts WOW back! It's super effective! GAJ-derp by micr0z November 22, 2010 0 0 Get merch Get the GAJ-derp mug. Buy Now — $32.95 See more merch
