pejorative term for a guitar player with less than acceptable level of skill, especially when compared to the person using the term.
Used in the late 20th Century in New York City.
So this dude sat in with us at the party we played but he was a slag, couldn't even do a 12 bar blues number.
1) Noun - the waste matter produced from refining metals from their ores.
2) Adjective - A promiscuous person (i.e slut, ganga, whore), all used up by others through sexual acts.
Noun) we need to dispose of that slag.
Adjective) your mum is a slag!
Someone who wants attention of boys either by getting their friends to shout them out on snapchat saying "Lots of lads❤" and then playing around with every one of them choosing who to pull and who to go out with
Girl: I can't believe you! why are you breaking up with me?!
Boy: Slag. Fuck off.