“Oh Oh Fuck Me”
HeadShot
-oof
Servers Down
-oof
I can't sleep
-oof
Meadsy : oof
The sound that an idiot makes after they get hurt, or another person
Oh he’s about to fall? Oof, lol he fell
When you roll down a hill in front of your mom...
Mom: timmy don't roll down that hill till you're dead!
Timmy: OOF! *Rolls down hill...*
mom: *CONFUSION*
O(f(x))
Oof is the composition of functions O(x) and f(x) (when the function definition field is common)