Bloody Violin 

Bloody Violin: is basically saying your gonna cut your self alot,
and the noise of your pain is the music from the instrument of your blade.

Random Guy #1:Hey so where did Ted go?
Random Guy #2:Dunno his friend said he was gonna go play the bloody violin, what ever that means
Random Guy #3: Face palm , you guys stupid , he's at home cutting him self . His arm is the violin and the blade is what makes the man cry out in pain, therefore playing the bloody violin.

Bloody Violin by Charles with fire August 19, 2010

Blood violin 

The meeting of wrist and razor blade in the act of, or attempt at, suicide. The razor blade takes the bart of the bow, the wrist the violin, and the cutting motion is the playing.

Playing the blood violin, i.e. cutting one's wrist.

Blood violin by Stu147 June 10, 2008