1 definition by Muah ha ha ha ha ha! Word Domination!

m.f. it

The abbreviated verb form of mother fuck. It is most often used as an interjection. Synonyms would be something like dang it or damn it.

M. F.-it! I just freakin' slammed my hand in the m. f.-ing door!

by Muah ha ha ha ha ha! Word Domination! March 11, 2005