jack pound 

to fuck a girl really, really hard for an extended period of time.

I jack pounded that hot slut from the club last night for a solid hour. Way to go Brad!!

jack pound by T Morph April 4, 2008

jackponderance 

The reflective period of time experienced by a man immediately after ejaculating.

I came to the realization that my relationship with my mother wasn't really where I wanted it to be during jackponderance today after breakfast. The jizz dripping slowly down my belly served as another reminder of my failures in communication to everyone I love. Anyway, bout to jack it again, peace out.

jackponderance by Josh Corwin September 18, 2019