Its a number game.
Basically hit on chicks often and ya get some bites.
Follow up on the bites. The more hit ups the more bites.
Pretty easy mano.
Ya may not fuck what ya really want but ya still get fucked

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I did this kind of thing in the nightclubs for years.
I would probably hit on about 20 different chicks in one night, ended up with alot of numbers, I was generally 1 in 4 numbers with a 1 in 15 fuck ratio.