*Refers to the act of banging the keys of your cell phone with your fingers.
Liz: Hey Becki, who ya finger bangin' over there??
Becki: i'm getting my finger bang on. i'm going to have some sex tonight!
2) the name of the boy band Stan, Kyle, Cartman & Kenny made that Wendy joined
3) to pleasure a woman with your hands in her pussy or ass or even to a man via the ass
"I'm gonna finger bang, bang you all through the night. I'm gonna finger bang, bang into my life.
I finger banged Michelle last night. She obviously liked it cause she giggled and moaned during it.