by BuzzkillBen April 3, 2011

When you're girlfriend is on her period and on the pill and you just don't give a fuck but don't have a condom and have sex with her anyways. the resulting mix after you get off is known as blum a mixture of blood and cum.
by beau gosse October 24, 2011

by Paul Chapman May 18, 2008

by xBlackFacex August 17, 2011

A nickname for a bad-ass person who works on classic cars & motorcycles. (also rad upholstery for any vehicle) It's quite possible for a Blum to show up on TV, Velocity Channel.
by donttellmehow February 26, 2013
