2 definitions by TheJigglypuffNinja

Top Definition
When one's true douchy nature reveals itself and is as sudden and overwhelming as an avalanche.
We all thought he was okay, but after his douchalanche last week, we try to avoid him now.
by TheJigglypuffNinja August 07, 2011
An extremely advanced case of derp in which the derper derps beyond the regular constraints of natural derp. This creates an immediate space around the user in which derp is both infectious and prevalent. It is a temporary state, and only lasts for at most 9 hours.
He deterped so hard that everyone in the room lost it and derped until the end of the day.
by TheJigglypuffNinja March 21, 2011

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