Urban Dictionary: jackathon

Masturbating over and over usually more than 3-5 times a day.

Yesterday I had a major Jackathon since no one was home.

by Danny Bregman April 29, 2006

A long period of male masturbation generally watching porno films. Sometimes the man will squirt his load on a models picture.

Today I think I will have a Jackathon as I have a big load to shot on her face.

by blowmenow February 05, 2008

Where you see how much you can jack off in one day before you can't get an erection anymore.

Hey Ryan wanna do a jackathon?
Me: Fuck yea, I'll be sure to stay stiff the whole time

by ItsMaybeEthernet March 22, 2015

When you masturbate so much with a smart watch on and it says you ran a marathon.

“I jacked off so much during Dick destroying December my watch says I ran a marathon. A real jackathon was completed.”

by MaBrain September 14, 2018