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. 
A scenario in which two opponents in the video game Mario Kart pass you simultaneously and send you into the abysmal 3rd place.
by ewwwwwww January 21, 2009
Get the Pieces of Ballsmug. a piece of scotch tape.
by vikmeister19 February 4, 2010
Get the piece of clearmug. Journalistic term for article, column or short story. In broadcast journalism it would be known as a segment or report. The New Republic canned fabulist Stephen Glass for pieces where he fabricated every single one of his sources. The Cabbie Homicide's writer uncovered a few of these fabrications as he was preparing for an all out war against a SomethingAwful plagiarist who made claims that the writer stole these from a so-called flash drive as VampireFreaks ignored this.
They were calling the writer a so-called 'pest' as he ended up getting into a very public war as he took it to vemeo and wordpress with the blog entry "Don't Fuck With What's Mine." He pulled out a documentary of the Charles Joseph Whitman to give this blog entry more venom.
They were calling the writer a so-called 'pest' as he ended up getting into a very public war as he took it to vemeo and wordpress with the blog entry "Don't Fuck With What's Mine." He pulled out a documentary of the Charles Joseph Whitman to give this blog entry more venom.
I've seen the plethora of fabricated piece narratives that Stephen Glass wrote first hand, my facebook public page has an exclusive speaking about walking around in Highland Park called "Hometown of the Fabulist."
by illinoishorrorman January 15, 2018
Get the piecemug. by The Mik March 30, 2019
Get the Piece of shitmug. by Ralphie999 April 17, 2022
Get the piece of shitting aroundmug.