1 definition by Cellularwhore

Top Definition
A person who is self-centered, believes that he is right all the time. Likes to play mind games with girls, and is confused most of the time. Very emotional, and easily angered. Takes things the wrong way. Loves to skateboard, snowboard, longboard. Gets together with girls, has sex, then runs off to the next girl the next day.
"OH my god, he pulled a derek on me"

"Last night was a total derek."

"I'm sorry, I have to stop this, I'm being a total derek."

"I'm not being emo, I'm being Derek."
by Cellularwhore January 08, 2010

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