Derp (as defined by the Urban Dictionary) - A simple, undefined reply for when an ignorant comment or action is made.
Yes it's Dallas Derps! Every week I look for something that totally qualifies as a "derp" and we talk about it! Okay this weeks derp actually goes to my roommate Zane. And the pic says it all lol! Who has a toaster in they're bathroom over the toilet? WE DO! Yup, never a dull moment at the Chambers Palace! Tell me about the derps you see! Something that just makes you go DERP!