One who slacks; Lazy; Careless.
1) Timmy didn't do his homework, what a slag.

2) That slag over there forgot to tie his shoe, he is going to trip.
by Mr_Ondz September 20, 2010
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Someone who can't keep their knickers to themsleves and constantly chats shit
by Nicolette D April 8, 2008
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Verb: To swing your penis with the same motion and force that one would swing a baseball bat into a girl's face. At the same time, one must ejaculate whilst the penis strikes the girl's face, leaving a thick glaze of sperm on her cheek.
"Adam: Hey, what'd Jess and you do last night?

Luke: She was using too much teeth, so I slagged her to teach her a lesson."
by The salt of the earth March 25, 2013
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A dirty bitch who sleeps with anything behind her boyfriends back she will sleep with anything that moves
You dirty slag stop shagging men behind people's back
by Anonymous124577 September 15, 2016
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A female who often has sex, not worried or gives a fuck about the outcome
by Queendick February 19, 2017
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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 that Vicky sure is a massive slag, isn't she British public?

She sure is
by Rashford for PM October 23, 2020
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A person who will literally shag an inanimate object what a fucking cunt, they will literally violate the anus of anything that moves for some sexual tension
Boy 1:who is that stinky cow over there that stinks of shit and cum and is shagging a tree
Boy2: oh thats just some filthy slag dont waste your vision looking at that cum rag
by the biggest bird 69 January 5, 2023
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