Definitions by MSTJ

Derp 

Someone working at the supermarket who pushes around cart's.

Hey, there's a derp pushing around carts all day!

Derp by MSTJ September 27, 2010

Derp 

A person who may catch you while you're doing something that you're not supposed to be doing.

Look out! It's a derp! RUN

Derp by MSTJ September 27, 2010

Mathijsrock 

A tiny rock that you will not see until the moment you fall over it, predominantly on a skateboard

Fuck that hurt! All these Mathijsrocks on the halfpipe are fucking annoying!

Mathijsrock by MSTJ September 27, 2010

Cheese 

Synonym for: RUN AWAY

Oh shit its the police! CHEESE!

Cheese by MSTJ September 27, 2010