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a useless bitch who can not get a decent guy so instead sleeps with everyone in order to make herself feel better.
Girl: Come sleep with me

Boy: Damn you are a slag.
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31
Excess flux from a weld, usu. projecting in such a manner as to impede fit. Removed by grinding, filing, or the use of a slag hammer.
That guy shouldn't have access to an arc welder! He has an inch of slag for every damned joint!
by Ike January 26, 2005
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32
Anyone my boyfriend decided to 'be friends with'. Usually passed around by friends. Specifically by 12-20yr old MALES who have no self-esteem and are just looking for a good 'fuck'. Usually turnbs out the be a massive dickhead and you wonder what actually happened in his past because he is a compulsive liar. He can never remember their names (or their faces for that matter) and if you ever ask about his past relationships, he will make us a stupid story about how nothing ever happened and they never saw eachother. Obviously, he's too ashamed to be known as the man who is used to riding the local bikes. And by local, i mean everywhere he can reach. For instance, my boyfriend lives in the west midlands, he pervs on girls at local superstore and went out with people from, Stourport, Blackpool and many other areas reached by train. Now he's driving, no one can stop him because he can go anywhere and sleep in his car. (By sleep, i do mean have sex). Thankyou and goodnight.
my boyfriend claims he never slept with that slag but I know both of his friend have before AND after him. What a lying c**t.
by THEDAFTGIRLFRIEND January 22, 2011
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33
A woman that fucks around behind her friends or lover's backs with numerous men, with no feeling what so ever for the people she is hurting. A trashy, deceiving, back stabbing, lying heart breaking, cunt. Doesn't care what she does or who she does it to, as long as people are talking about her, weather it be good or bad, she's happy. Wherever she goes, drama is sure to follow.
"You slept with my boyfriend, my best friend, and my brother !"
"haha, yeahh, I hope my boyfriend doesn't find out."
"You fucking slag."
by lolbitchh November 03, 2011
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34
An extremely cheap hooker/whore. You do not wish to be one because you can also be called a slag master. For an example watch the movie Ali G.
by Zack Began February 24, 2006
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35
A man whore, so called playa, pimp, a nigga with game or a guy that gets around.
Tony is a slag for having a girlfriend the next day after his break up with Keyshia.
by RiFbUCKS July 18, 2009
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