Masturbation Marathon 

An exceptionally long episode of masturbation fits. These episodes are usually brought on by sexual deprivation and bordom; however, and I'm not making this up, they have been used a means of fundraising for sexual related causes such as safe sex. A masturbation marathon is a strenuous event that requires disciplined training and preparation. There are several related subcatagories such as time, ejaculation distance, and most orgasms for both male and female competitors (I'm totally serious - google it).

Hillary's return brought an end to Bill's 72 hour masturbation marathon.

Masturbation Marathon by Face_Bones August 29, 2013

marathon masturbation 

When one repeatedly masturbates with both arms until they both give out.

Guy 1: Dude, I can't feel my arms!
Guy 2: Why not?
Guy 3: Marathon Masturbation!

marathon masturbation by c_monnen February 9, 2014