Disasterbation

A calamitous event, one occurring suddenly and causing great misfortune; a failed attempt at masturbation.

If somebody walks in on you or a tornado comes while you're a masturbating and you're interrupted... your attempt to masturbate becomes a disaster - disasterbate - disasterbation

Dude: My mom caught me jacking off man...

Sweet: Damnn.. Tragic man, disasterbation can hurt a guy for real