Oof is, in some cases, the glorious sound of defeating some person on Roblox that has died. In other cases, it would be not be so glorious, as someone has defeated you, or you glitched into a tree and had to reset because you are too
lazy to actually get out of the tree. either way, it is the sound of dying or resetting in roblox, widely know by both roblox-players and meme-lovers. The previous description was for the roblox-players, and now for the meme-lovers. In memes, oof has multiple meanings. Some use it as not having the turnout expected (if the turnout is worse than expected), or
sadness. This would, quite obviously, not be used for real sadness, but
maybe disappointment. Others use it for its origin, dying in roblox, but some use it for dying in other games, or taking damage.
(ex.1):
dude 1: I just got oofed in Roblox.
Dude 2: um what?
Dude 1: I died.
Dude 2: oh.
(Ex. 2): Dude 1: Oh, I got you something.
Dude 2: Oh cool thanks!
Dude 2: (Opening it) Wait, it just a plaque with the word oof on it...
Dude 2: Oof.
(Ex. 3): Dude 1: No, on the back it has something taped on to it, silly!
Dude 2: Oh, okay. its some game that isn't a download game.
Dude 1: C'mon lets play it!
Dude 2: I call first player!
Dude 1: okay, lets play.
Dude 2: Oof. I just died.
Dude 1: OOOOOOOOOOF