Refers to fanfiction, which means that the fic is one chapter long and will not be continued. Mostly canon.
Hey, should I continue my oneshot, or leave it as is?
A term used in Halo 3 Team Multiplayer matches. When an opponent has no shields and is on the verge of death. All it takes is one more shot to finish him/her off.
1st Guy: Over at sniper tower, he's oneshot.
2nd Guy: Got em.
1st Guy: Niiiiice.
1st Guy: WTF dude, why didn't you finish him off!? He was oneshot!!
2nd Guy: I didn't see him you f*cking *sshole!
In WoW, being taken from 100% to death in one blow.
Common when bosses enrage or dps and healers get aggro
Tank: "Watch your threat...l2omen"
DPS: "DURRRRR WAAH?"
Boss: waltzes over to lil tiny gnome clothy
DPS: "WTF I GOT ONESHOTTED!??!"
Used often in First Person Shooters when someone acheives a one-hit-kill.
Guy1: Dude, I totally one shotted that guy
Guy2: Bro, that was me.
Guy1: Did you see that oneshot I just got?
Guy2: No, I was worrying about saving my own ass.