WTF does derp mean?!?!?

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A simple, undefined reply when an ignorant Комментарий или action is made. Brought to life in the South Park series, when Mr. Derp made a guest apperance at South Park Elementary as the chef for a day, followed by hitting himself in the head with a hammer and exclaiming "Derp!"
or
A stoner или a retard
Google is a very good Источник Ты know...

What the f***

A picture is worth a thousand words, does this answer your question?

Urban dictionary says: A simple, undefined reply when an ignorant Комментарий или action is made. Brought to life in the South Park series, when Mr. Derp made a guest apperance at South Park Elementary as the chef for a day, followed by hitting himself in the head with a hammer and exclaiming "Derp!"

The word means someone who does something really foolish like replying to a stupid Комментарий или action.


Such as this picture for instance.