Its a died out roblox meme that fucking idiots use when they want to be funny or have nothing to say like a fucking normal person
by fvk_logic June 13, 2018
Get the Oofmug. The sound your character makes when you die in the children's game ROBLOX, but has now evolved into what you reply with when you don't know what to say.
by DO YOU LIKE TO EAT CHEESE April 21, 2019
Get the OOFmug. 
this is the boomer or typo version of fuck off, which is always use as an insult to tell someone to leave, and people who use this form are considered as people who don’t know how to type or use a phone, which specifically means boomer
by goddammit:/ May 5, 2020
Get the fuck oofmug. 
by That one weird girl you know April 28, 2020
Get the Oofmug. by peruvian gamer September 26, 2020
Get the quadringenarious oofmug.