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JAM is a well-known slang word within the UK standing for Just A Minute, a long running popular BBC Radio 4 panel. The slang JAM was first used within the BBC, but this unofficial slang is now far more widespread.

Devised by Ian Messiter (1920-1999) whilst aboard a London bus, JAM was first broadcast in South Africa before being adopted by the BBC in 1967. It is distinctive by its use of the minute waltz.

An extremely entertaining but simple format, celebrity contestants have to speak for one minute on a given subject without deviation, repetition (of a word) or hesitation. If they do, other celebrity panellists can make a challenge; a successful challenge means they in turn get to continue talking on that subject for the remains of the minute. By 2009 over 700 episodes of JAM have been aired.
"Don't telephone me at 6-30 as I'll be listening to JAM on the wireless."

"No chance of that as I'm also a fan of JAM!"
JAM by caiptean September 21, 2009
Related Words
Jame Jamie! jams James Charles Jamal! Jameson Jamison jammies Jammer jamari
known as marijuana or to smoke marijuana.
1. yo do you have any jam?

2. dude you tryin to jam later?
Jam by jamhead05 April 20, 2011
Jam by deanerss526 August 20, 2012
word used as synonym for cool. Used by many and originated in St. Mary's County, MD cool slammin
Oh gosh golly, that was such a jam movie!
David thinks he's jam because he talked to the popular girl, Taylor, but he's not.
jam by Lord Cuckoo Butt April 26, 2008
To snort, or less frequently, inject a drug.
I jammed seven E last night, look at my nose bleed.
jam by Karma September 18, 2006
a slang word for a female, often used to replace the harsh word of "Bitch"
A yo I saw your Jam today, she was looking good as hell
jam by Check December 28, 2005