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Someone (usually a girl) that thinks too much and in turn, making things more difficult than it should.
Vince: So what did you do today?
Irene: Well, I wanted to go do yoga, but then I weight out my options, listed them out, and figured that I could either go to yoga or stay at work and finish my project while spending time with co-workers but probably need to go to yoga since I feel so out of shape.
Vince: ......

5 hours later...

Vince: So what did you end up doing?
Irene: Oh I just baked a cake instead...
Vince: You overthinkingmonkeypoop!
by The Womanizer October 30, 2008
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