The act of hand balling (or passing off) a work task to a colleague. Also, to only partially complete a set task and drop prices without any sign of resistance from the client causing additional work for others.
To be stitched up (tricked, set up). (original meaning circa 1960-1990)
From the range of Muller Saddle stitching machines found in nearly every print company, used to secure paper to make booklets.
In recent years it has come to mean drunk or rekt
That bloke absolutely mullered me last week when he new i was desperate for those wheels. He nearly doubled his price, the geezer.
Not sure what "drungs" are - obviously part of unknown's own perculiar vernacular. Hmmm ... rather than speak for a whole country perhaps 'unknown' would do better to realise his / her own parochialism instead of reinforcing it with overly general statements? The meaning of a word depends where you're from and who you are with - "Mullered" can indeed mean intoxication due to drugs within the UK, as it can mean intoxication due to alcohol. If 'unknown' had met anyone outside of his ward he / she would no doubt be aware of that.