For all of you vulgar people it can also mean the abbreviation for Unified National Fine (as in thread of a mechanical device that has a spiral groove cut in it for holding and fastening things together, most times called a "screw" that has no connotations to vulgarity.
by 1ofmanytoo July 12, 2011
Get the UNFmug. by gretchen69me January 1, 2012
Get the unfmug. unidentified nocturnal fornication
by fireball4u January 4, 2005
Get the unfmug. Any sort of vigorous sexual intercourse. "Unf" being the sound one might make, as in;
"Unf unf unf..."
"Unf unf unf..."
Brian and his boyfriend were unfing in his car like the whole time; I only saw them at the end of the night.
by mini-taur August 10, 2016
Get the unfingmug. by SirBox March 14, 2003
Get the uNfmug. 
