Top definition
The act of stimulating derpiness in yourself or others.
Kayla: I can't believe I derped all last night when I should have written that paper. All because of Aiyana and her derpivation.
by Kleine_Doktorin November 25, 2013
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug