look up any word, like swag:
 
1.
a person who never has there own stuff and is always borowing from others
Josh is a bum he always smokes are shit but never pays.
by Josh D'Arcangelo February 25, 2007
 
2.
Someone who is annoying, or for some reason makes life difficult for you.
Someone Who Makes You Put Everything In A Bloody Sharing Folder is a Bum
by PicklePop Kirsty May 06, 2008