oof is commonly used by smol children and or people who meme a lot
oof originated in a dead game called Roblox
"oh oof I forgot to send that meme"
"oh oof I left some shit in my locker"
When something weird or bad happens and you don't really have a reaction
Joe: I just dropped my fork on the ground
Tommy: oof
A common word used by young children, I'm sure they get it from this game called "Roblox".
The sound comes after a player restarts or "dies".
"Did you hear that Aaron got new shoes?"
"Oof, he did? I'm so jealous".