1) Playing the bass so low that you can rest the bottom on it on your sack.

2) Having your face shoved across concrete or the ground until your face is bloody and scraped.
1) Look that guy is Murderfacing it on the bass on stage.

2) He hit a bump, flew off his bike, and Murderfaced it for like 10 feet
by Dr. Rockso February 26, 2008
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(v) To accomplish a task that would normally require hands with your penis, in the style of Dethklok bassist William Murderface... Murderface... Murderface
Hey, did you see him murderface that bass solo?!
by Timmmaaaay January 21, 2008
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The self-hating bass player from the band Dethklok. He plays a Gibson Thunderbird Studio 5-string and his bass playing is usually mixed out completely. He speaks with a heavy lisp.
Murderface's father killed his wife with a chainsaw before turning it upon himself in front of Murderface in a grisly murder-suicide when he was a baby. He also has an extreme hatred for Dr. Rockso.
William Murderface: "I woke up with a clown's hand in my pants. That's what I did today"
by Krazy Riddens October 15, 2009
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