Gangsta Rap is For Little Kids

The aggressive sense of English "fuck" and "screw" was not strongly attached to futuo in Latin. Instead, these senses attached themselves to pedicare and irrumare, "to sodomise" and "to be sucked", respectively, which were used famously and hostilely in Catullus 16:

Pedicabo ego vos et irrumabo,
Aureli pathice et cinaede Furi,
qui me ex versiculis meis putastis,
quod sunt molliculi, parum pudicum.

("I will fuck you in the ass and make you give me head, you faggot Aurelius and pervert Furius, because you thought me indecent because my poems are somewhat sissified."

-http://en.wikipedia.org/wiki/Latin_profanity

For reals, get in a rap battle with the greco-roman poets and you will probably get served.