The dark bit at the top of tights (panty hose) which shows when your skirt/shorts are too short.
"Sophia, pull your skirt down, your slag lines are showing, you look like a whore"
by amish_drive_by May 13, 2008
Top Definition
foundation lines orange face and white neck then youu can see the line where someone has stopped putting the foundation on
Becca smudge your slag lines in

Amy i can see your slag lines
by Bethyy x July 27, 2008
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.