slag 

it is a word that boys or men give to women when they have no better insult for them when women
a. refuse to sleep with them or
b. act like men
c. admit to enjoying sex

women: "sorry love your not my type"

man: "whatever then your a slag"

slag by Laura and Relly April 17, 2006

Slag 

Apart from other more obvious meanings, Slag is a waist product produced inside a Blast Furnace. It is produced when Limestone is used to remove impurities in Iron. This can be difficult to dispose of and may form slag heaps when dumped in the environment. These are large mounds of thrown away slag.

Citizen: I hate all this waist slag polluting the local environment.

Council member: Don't worry; we are currently working on removing all of the slag heaps.

Slag by Chemistry12345 June 28, 2011

slag 

1. A man or woman who sleeps around with many people.
2. low quality Coal that is unusable.

1. Katie slepped with John on saturday and then Peter on Sunday. What a Slag.

2. Look at the Slag Heap's next to the coal Mines

slag by Tony June 12, 2004

slag 

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."

slag by Terenn September 23, 2005

Slag 

The word "slag" most notably refers to Vicky Ford, an MP who spends hundreds of thousands of taxpayer money on hotel rooms for sordid sex parties where she promoted children not being fed as part of her slaggy fetish

Wow isn't that Vicky Ford MP a big old slag

Slag by Rashford for PM October 23, 2020

slag 

a woman that fucks behind her partners back

you are nothin but a fuckin slag kelly .i hope you catch syphilis because it will probably make your stinking gash smell better

slag by Anonymous April 6, 2003

Slag 

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)

Slag by pieman349 February 25, 2010