It's during a sexual intercourse. The male dips one time then finishes and zips his pants. This happens maybe the first time the male has sexual intercourse and it's quite embarrassing.
Guy: Dude i completely embarrased myself last night with Janna.
Guy 2: What happened?
Guy: I onedip zipped...
Guy 2: Ahh shit man.
A person that prides themself on bestowing upon a fortunate individual a high standard of pleasure, not usually possible with just one digit.
Oi Charles, have you heard about this prowling Robin Hood whoe's new in town. He goes by the name of the "One Finger Bandit". He pillages the rich and ravishes the poor.