When someone trys to scam you, or get their way when they are in the wrong, commonly used in driving when someone trys to get in front of you just to slow down or cut you off
"Hey Buddy you chose that lane dont try to yam it and move over"

"This bitch is yamming it, trying to skip a whole lane of traffic and cut into the turning lane at the last second"
by Mike Masarati September 20, 2008
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Person from the Black country which is in the west midlands, very close to birmingham. The Black country dialect is very unique. Yam yam derives from 'you am' e.g 'yam coming with me ay ya?'
A couple of drug smoking munch seeking yam yam's in a car:

"Yam gewin the wrung way! Where am yo gewin kid?"
"I ay at all!"
"Ye yam, yo day tek that last turnin ya saft get!"
"Oh arr, soz I day realise"
"yo'll atta gew back im starvin I cor wait no longer kid!"
by A drug smokin yam yam June 8, 2007
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The act of licking another person from side to side along the longest part of each butt cheek without lifting your tongue. yam to yam Y2Y
Ray : Damn! Chema, let me go yam to yam!

Chema : Damn dog! From cheek to cheek? What if I clench?
by Saucy! September 6, 2018
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a yam yam is someone who is dirty or a tramp
shut the fuck up you yam yam
by fergie247 December 6, 2022
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A Person what lives in Black Country
"what yam doing tonight?"
by mick unsworth November 2, 2003
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A person from the Black Country area of the West Midlands of England. Yam-yams use a slight variation of English that is often incompehensible to non-locals (and even to their neighours from Birmingham, with whom they share many similariies in vocal accent) due to both the thick accent of the speaker and the frequent exchange of standard words in place of local terminology (the most obvious example being the substitition of the word "you" for "yam").
"I wish these yam-yams would bloody learn some English."
by kipstik.FiL November 8, 2004
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