by www.hmscom January 28, 2023
Get the Stfumug. It stands for SHUT THE FUCK UP
by A Boy With A Fat Sister March 18, 2020
Get the STFUmug. by Destiny_dgaf01 January 21, 2018
Get the Stfumug. 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. 

