Stands for one of the following forms of motherfucker: motherfucker, motherfucking, motherfuck. The form that is used depends on the context of the situation.
by TurnM3Up December 10, 2019
Get the MFmug. That MF Ugly!
by StraightGirl6060 September 5, 2018
Get the MFmug. by Falken January 17, 2003
Get the MFmug. by Margaret<3 January 27, 2009
Get the MFmug. by MadFishMF November 4, 2020
Get the MFmug. 
