When a female or a male puts their finger a female's vigina and procede to move it up and down.
I'm totally getting horny right now, but i don't have a guy. Oh i'll finger pop my self.
When a male or female takes their fingers and inserts it into a vagina..
let me fingerpop that pussy. You know u want to squirt your cream and let it stream on my beam while i scream like a teen with wetdreams..hmmmm....fingerpoppin' a pussy
Old school phrase meaning partying and having a good time, dancing and snapping their fingers to hot music.
Those fools were booty shaking and finger poppin all night long, e.g. having a "finger poppin good time."