the act in which one person provides sexual stimulation for another person by making
a gun with their fingers, before
thrusting the 'gun'
in and out of another persons holes while making a shooting noise with their mouth.
Situation 1:
John: "I was out last night, and this
dirty hoe asked if i would
finger gun her, what the fuck!?"
Situation 2:
Person 1: "I was
finger gunning your mum the other day and.."
Person 2: "Wait, what!?" *Beats the shit out of him*