To insert one or more fingers into a vagina for sexual pleasure. It can also be when the clit is rubbed to bring on an orgasm. It is often done as foreplay to get the female wet enough for sex or by guys who aren't 'up' for having sex
Girl: I can't, I'm not wet.
Guy: I'll finger fuck you to get you wet.
Work it like a nigga straight licking on your pearl
I wanna see you cum in the middle of the dance floor
A nigga can't fuck, what you think your finger made for???
I'ma beat that pussy up
You get it wet enough, I might lick it up
Lickey, lickey, lickey, like a peppermint swirl
Lick that clit