Jacksterbation - The ultimate solo action when a guy just wants to be alone w

The ultimate solo action when a guy just wants to be alone with his meat and his hand, no questions asked.

I did a jacksterbation during my mom's phone call and she didn't even notice.

I did a jacksterbation in the car and the radio was blaring so loud I couldn't hear myself think.

I did a jacksterbation in the middle of math class and got a detention.