To insult someone or something, often in a messing way (but not always)
Girl: "Look at my painting!"
Friend: "Were you drunk when you painted that?"
Girl: "Hey!"
Friend: "Oh it's okay. I was only slagging you"
by Foy February 14, 2006
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the opposite of scene or emo. a new wave of few kids who have nothing in common except for a love of their local music scene. comming straight out of jersey. they are in-your-face, pugnacious, and tend to start things with the annoying, vain, self loathing scenesters in the pit today.
Ken was so slag today when he bit of the mighty moshing emo ranger's ear in the pit.
by caitxedge June 24, 2005
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An alternative for night-time/sleep wear.
It's getting pretty late! I'll go put on my slags, and fall asleep!
by Ganon23000 July 07, 2011
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A girl who is under 18 (usually around 13-17) that is dating a guy over the age of 18, and is generally a skank or floosy. An underaged girl who sleeps with much older men.
"Kellys going out with Mark?! Shes 14! And hes 22! Shes such a slag."

"Tell me about it, hes just using her as a naive toy"
by kehfeh August 04, 2007
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"Alicia off Misfits was such a slag, that her nickname was "cock muncher."
by reignbeau6 March 11, 2012
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someone who has got off with something he/she shouldnt have...
He got into the club for free, the slag...
by Baz McGee May 09, 2004
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To not tell somebody your past, and then to be judged about it.
"She never told you about her past? Wow, she is such a slag!"
by aaabbbyyyyy November 18, 2008
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