Top Definition
The stain left in your draws or on a keyboard after a good Jackoff.
Man i hope mom dosen't notice that jack stain on wash day.

Nice Jack Stain man.

WOW!!! look at the size of that Jack Stain.
by JerkSquirt July 10, 2009
14 Words related to Jack Stain
A stupid person described by a spot or spots of ejaculation.
"Paulie was busted after trying to buy weed from an undercover cop...he is a real jackstain."
by Shawna123 August 08, 2005

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.