Derping Out

A verb to describe the action of somebody or something that is acting in a manor that would cause somebody to think that they are mentally handicapped.

When Iryna fell on the floor and started laughing uncontrollably for absolutely no reason, Ryan and Matt mutually agreed that she was derping out.

by NotBigSurprise April 15, 2011

derped out

An overload of derp.

1) Aw man I totally derped out in that exam.

by herpdyderp December 15, 2010

Derped out

When you make a really stupid mistake, or when you fall flat on your face.

Billy was derping out when he thought his lunchbox was his textbook.
John derped out after getting dizzy.
Matt's derping out!
Bob derped out!

by LAKottke June 10, 2020

Derping out

To derp out is to have a ballistically fun time with your friends, and things might get weird in one way or another, meaning you might do something that you maybe didn’t expect to be doing when you were sitting in your 2pm Supply Chain Lecture earlier that day.

What’s Connor doing later?

Probably derping out per usual.

by Bimjo August 23, 2025