jackoffathon
A long, non-stop session of jacking off that makes your hand sore and your brain forget what your name is.
I did a jackoffathon for 8 hours straight. My hand was a meatball and my brain was a noodle.
He started a jackoffathon during a Zoom meeting. His boss thought he was having a seizure.
My dog watched my jackoffathon and now he jacks off in the hallway at 3 a. m.