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1. Cossintan
a person who lacks basic info. on an event.
Person A: I keep hooking my shot (golf)

Person B: Maby you should hit harder?

Person A: Shut up! You're such a cossintan!
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by wikywhat Apr 4, 2009 add a video
2. Cossintan
Another way of saying "you're ignorant!" but in a stronger way.
You're such a cossintan in music!
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