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1.
its a term of expression to signify that you are here and you mean business. Granted it can also mean that you are there to fornicate to but in the intended sense its suppose to mean you have a agenda, your there to play ball, your very serious and mean business
guy 1: Man Don was really serious today, is he normally that serious?

guy 2: Naw man , Dons typically not that serious, but today he was sure there to fuck.
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*while robbing someone*

Thief: Im here to fuck, give me your purse!
Victim: oh no! thats the sixth purse this week, gotta move outta detroit.

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*In the most literal of senses*

Boyfriend: Im here to fuck!
Girlfriend: oh i love it when you take the initiative!
by the Legion of Doom March 07, 2011
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