To insult and bad mouth
Those guys keep slagging me off
by beef curtains April 18, 2003
Slag literal
completely useless byproduct of smelting steel

Slag slang
A horrifically fat, rancid, elderly prostitute who is worn out, putrid, and heinous looking. They're usually on the outside of euro-trash red light districts and are thought of very poorly by their successors. They tend to scare off potential customers by being boner killers. Good looking hookers get no traffic when there are Slags around.

All other deffinitions for Slag are just Slag.
Do you see that slag over by Nancy? Last time I saw it I couldn't fuck my bosses 18yo daughter for two months straight! Destroyed the fucks out my boner bro, don't look!

Primal essence is a nasty slag in Sin City Atlanta GA that can kill a boner even within one foot of Nancy Kalahan.
by SlagHammer November 12, 2014
An unfortunate condition of that world renowned mammal, the human being. This condition allows the subject:Male or Female to wear ridiculous amounts of body perfume and revealing, or "Sexy" clothing, in order to attract attention, unfortunately they are completley unaware of how repulsive they are in everyway. This condition can only be treated by nuns or monks, both of who are unfortunatley rare in our slagorific society. Also see basingstoke
Famous slags : Cherrie Blair, Jordan, Robin Cook and Sonya from round the corner (prime example Sonya from Eastenders)also Peter Stringfellow, the inventor of all that is Slag.
1. A combination of the words slut and hag.

2. A promiscuous woman, usually found unattractive, that has very low standards when choosing sexual partners.
I can't believe that slag is back at this bar. I think she's already fucked everyone here.
by Queen D September 05, 2006
An all-purpose, non-vulgar word, originating from the Transformers cartoons, to be used in place of just about any profanity.
"Oh slag! The Decepticons are attacking!"
"This is a piece of slag."
by Terenn September 08, 2005
The rubbish left on top of pure iron in the blast furnace
scientific name:
'Calcium Silicate'
by kelly February 18, 2004
A woman who is infinately cock-hungry and shags many men behind her partner, usually with a wide pussy
Slag's friend: Theres 60 men with boners from here to the door. Can you make it?
Slag: No! (starts sucking the nearest man's cock and telling the others to stuf their dicks in)
by pieman349 February 22, 2010

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