What is Afterjack?
1.
A small amount of semen released a short time after one masturbates.
One masturbates and goes about his business. Then a few minutes (roughly 5-15) later a small drop of batch drips out of the relaxing penis. A nuisance because it dampens the boxers/briefs.
John: "Ahh F!"
Pete: "What?"
John: "I just got some afterjack in my drawers."
Pete: "Hate it when that happens."
See