Jacksterback 

A flashback you have while jerking off. This experience could have occurred years ago or the day or masterbation.

Damn I just had a jacksterback of my co workers phat ass

Jacksterback by MattypFaps July 6, 2018

Jacksterbation 

The combined process of jacking off and masterbating.

"The only way I could think to celebrate the end of the work week was with an intense jacksterbation"

Jacksterbation by Frankie "J" Leisure October 18, 2008

jacksterbate

the form of male masturbation; jacking off/wanking off

my guy friends gell me of their jacksterbate adventures

jacksterbate by gabbyxlover August 4, 2007