The term "Cock-Twatlling-Piece-Of-Shit" is used when you want to express that someone is a "fucking piece of shit", but you want more pizzazz
by PitifulIris April 3, 2021
Get the Cock-Twatlling-Piece-Of-Shitmug. A term used in the UK when someone is desperately trying to convince you that their piece of information or version of events is correct to gain your trust but you know that they're blatantly lying through their teeth. Or someone is trying to sell you the latest designer object (watch, trainers, handbag etc.) and you can clearly see it's a fake. It's as genuine as a 40 pence piece. There is no such thing as a 40 pence piece in UK currency so if someone tried to give you one you'd know it wasn't real money.
A woman looking at handbags on Ebay: "oooo have you seen this lovely designer handbag it's only £10"
Friend: " narr mate it's a fake"
Woman: " it looks genuine to me"
Friend: " genuine! It's about as genuine as a 40 pence piece"
Or
A man after been told someone unreliable information: " rubbish! what a load of old tosh"
The informer: " narr mate it's absolutely genuine"
Man: "yeah about as genuine as a 40 pencepiece"
Friend: " narr mate it's a fake"
Woman: " it looks genuine to me"
Friend: " genuine! It's about as genuine as a 40 pence piece"
Or
A man after been told someone unreliable information: " rubbish! what a load of old tosh"
The informer: " narr mate it's absolutely genuine"
Man: "yeah about as genuine as a 40 pencepiece"
by hteb78 January 23, 2024
Get the As genuine as a 40 pence piecemug. 
Man, I don’t know who is a bigger piece of shit, Laura, or Daniel. Competing for that title is the only thing those two contribute to society.
by Rosa V December 16, 2021
Get the Piece of Shitmug. Equal number of givers and receivers at a Wisconsin based orgy or Wisconsin attendees. Derived from the Wisconsin term “a horse a piece”
Hey - will there be a balance at that Red Dear Lake orgy on Thursday? Yup - if you show up, they’ll be a buss a piece.
by Db_007 January 10, 2023
Get the a buss a piecemug. 
by ಠ_ರೃ 1997 April 28, 2020
Get the Piece of shitmug.