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1.
suicidal masturbation.

"where's John?"

Didn't you hear, he had a Michael Hutchence Deathwank.

"oh... right"
by ci2k2 August 14, 2002
 
2.
A death wank involves cutting off the brain’s oxygen supply while simultaneously masturbating furiously. Participants either report a heightened sexual pleasure, or collapse and die.

More commonly referred to by its scientific name Auto-Erotic Asphyxiation, death wanking is particularly popular among celebrity circles.
How did that newsreader die?

He had a death wank.
by jryze March 12, 2010