A ubg mf

"A Ubg mf" (An Untitled Boxing Game Motherfucker) meaning;
A person who crossdresses, is acting like the opposite gender, might be homosexual or is just a salty/unmeaningful person

"You don't play fair, man! You always just do the same move on me!" - Person 1
"Oh, you a ubg mf." - Person 2