The crumbs you get in packets of Weetabix.
Mark: What do you do with biccy crumbs? Do you eat that shit?
Philip: Naw dog, I throw them right in the bin. They drink up all the milk and make it mushy.
by Weetabix Wizard April 29, 2019
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The term used to describe when you steal biscuits from someone's biscuit jar and the stolen biscuits are crumbled and broken up in your pocket
Mate 'av you got a biccie pocket, I put 3 'tard creams in the jar for later but they all gone.
by Assdhkposwwf23 July 29, 2017
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after the consumption of biccies or ecstacy, some people's jaw often drops or sags with constant grinding of teeth. people insecure about their biccie jaw will often suck a lolly pop to hide it or to give them something to suck instead or grinding their teeth.
1. man: "dude what the fuck is wrong with your mouth man, its so saggy and shit"
raver: "aw fuck dont tell me i got another biccie jaw, fuck!"

2. friend 1: dude look at that chicks mouth. its fuken perfect for gobbies
friend 2: nah man shes just got a bicci jaw
by raven mcraver February 22, 2009
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Chocolate Biscuit ... a chocolate covered cookie, in the U.K. Often enjoyed with a cup of tea.
Roland liked to dunk his choccy biccy into his tea before each bite.
by jfmguitarist November 10, 2013
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Derogatory slang term for catholics used in Northern Ireland.
Apparently derives from the fact that Nuns look like Penguins, and a Penguin is a type of chocolate biscuit.
Here Gerry, your mum's a fucking chocolate biccie! y'dick!

If you like a lot o' chocolate on ur biscuit...

we’re going to need to conduct a number
of tests before I can give you any answers, y'chocolate biccie bastard!
by Mike Q Carswell February 28, 2006
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A night that involves two or more friend that have a strong bond and some good biscuits.
These nights are very enjoyable with for friends groups that know some funky tunes
Friend 1: what we doin tonight mate
Friend 2: BICCIES WITH THE BOYS!!
both: HECK YEAH!!
by A moldy sandwich October 28, 2019
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