One who says or does too many things that are or relate to derps. the word emphasizes how much the person derps that it theoretically amounts to the size of a dinosaur, therefore it is adequate to address the person as a "derpasaurus".
1. Bumpasaurus
A flamboyant normally under the influance dancer, who may be extremly good looking/startling gifted dancer. Who whenever even puts the smallest toe on the floor the whole place cant help but goggle at the stunning skills they uphold.
A name coined for the dinosaur that appears at the end of the stage 'Dino Dino Jungle' in Gamecube's "Mario Kart: Double Dash!" The Derpasaurus sticks his face across the bridge as you are karting across.