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"
by hteb78 January 24, 2024
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piece it up

Jenny: "You hung out with Carlos last night?"
Michelle: "Yes, we pieced it up."
Jenny: "That's what I'm talkin bout!"
by Shirty McSame March 06, 2003
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piece control

Piece control is a term coined by legendary Fortnite caster Arten "BALLATW" Esa. It means controlling the pieces in proximity to create openings for eliminations. It ultimately allows the player to dictate the flow of a fight, limit an opponent's options, and create opportunities to land shots.
Player 1: *sweating*
Player 2: “This man’s piece control is FUCKING TRASH, bro can’t even crank 90s 💀”
by yamurban September 22, 2023
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pieced

I’m full pieced.
I just pieced this kid up.
by RandomJod November 30, 2021
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Pieces of Balls

A scenario in which two opponents in the video game Mario Kart pass you simultaneously and send you into the abysmal 3rd place.
dude, PIECES OF BALLS!!!!!!!!!!, DK and Bowser just passed me!!!!!
by ewwwwwww January 21, 2009
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ass piece

when you stick a gun in between you ass cheeks to hide it
yo bro dont let the opps see your ass piece

yo bro your ass piece is hanging out
by palo da bean November 12, 2023
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train piece

A bitch that you and your friend(s) take turns fucking
You fucking train piece bitch
by DracoCJM2 December 03, 2017
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