look up any word, like blumpkin:
 
3.
UFM
Ulitmate Fat Man

A large man who is the ultimate
John is the UFM for sure
by John John March 02, 2005
 
1.
UFM
Unfollow Me
If you don't like my tweets, UFM
by fmpete April 03, 2009
 
2.
UFM
Uninvited Family Member
Oh no! We have an UFM coming!
by _romansa September 24, 2010