From South Park. Originally meant to be said when someone does or says something dumb. Now, said by douchebags and trolls for any reason whatsoever...or sometimes none at all.
by GIVEmEEEEEEEEthePower December 8, 2011

derp de derp de derpidy derp
by jonnyg September 1, 2006

by D. J. M. November 13, 2011

"Is 'derping' still being used? Do people even say that or is my boomer showing? If its not being used, could I change its meaning to 'scared and coughing?'"- CallMeKevin 2020
by Jim Pickens's victom December 3, 2020

by ferral penguin June 29, 2011

by Cpt.Bob October 16, 2003
