Acronym used for the phrase "shut the fuck up" for efficiency reasons, but your REALLY fucking mad. it is mostly used in arguments.
by theSUTmaster July 18, 2020
Get the STFUmug. by Obed.ftp October 22, 2020
Get the Stfumug. by Ur Mum Got Hit By A Semi Truck June 15, 2018
Get the stfumug. by Annyeonghaso anonymous September 13, 2020
Get the Stfumug. by zoe ellys May 10, 2021
Get the stfumug. Boy 1: Hey man what up how are you doing you wanna go play games......
Boy 2: Oh my god man STFU you are so annoying
Boy 2: Oh my god man STFU you are so annoying
by Gupyfordeath February 14, 2019
Get the Stfumug. 