A person is taking a dump, and a person has to piss. So the person pisses between the poopers legs without splashing or dribbling.
Last night I was so drunk I was threading the needle.
Ejaculating into the end of someone else's penis.
Last night, I caught Gary threading the needle of some homeless guy in the park.
The act of killing someone in a shooter game by shooting the bullet through a narrow space at distance . Usually done with a sniper rifle and with only one shot.
Gamer : Dude i was playing Bad Company 2 and all i could see was this campers scalp about half the map away between two hummers through my scope one shot one kill.
Gamers Friend : Dude that's called threading the needle your a bad ass!!
Trying to have sex while flaccid
"I was so drunk last night I was practically threading the needle with that girl."