Definitions by my kiwis

oof 

Originated in the free online game, roblox, oof is a word used when you die in a video game (oof is the death sound in roblox) oof is now used to reply to someone when you have nothing else to say or don’t know what to say.

Mom: Son, grandma died yesterday.

Son: oof

oof by my kiwis May 19, 2019