Late 70's through the 80's in South Georgia meaning to verbally wreck someone; to put someone down.
Chick: His dick was so small he thought he had two hairs til one of them peed!

Dude: Damn, you just janked on him hard core!
by sugarrae February 02, 2010
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(fr. "Japanese" + "Yank") A young leftist American, usually male (but can also be any Westerner of either gender), who travels to Japan for the express purpose of shallow cultural dabbling, inflation of self-worth, and the search for a supposed sexual haven; teaches conversational English because he/she has no other marketable skills.
This morning the train station in Nagoya was crawling with Janks on a summer exchange program.
by The 2-Belo May 07, 2003
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Wack, Messed up, Bullshit, unfair.
Terrorist: Haha, I bombed your country.
American Citizen: That shit is Jank.
by ShesthatRideordiechick February 23, 2009
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An offensive, derogatory slur for Americans, created by the British back during the American revolution. Since then the term has softened in to the word Yank and Yankee, a far less insulting word sometimes even used as a term of endearment by the British. Jank today is hardly used as a way to insult Americans and has spawned a new meaning, often referring to a useless, worthless, or crappy piece of junk.
'Jank's are so dirty, a white feather would make their outfit look fancy.'

‘This VHS player is totally janked. It won’t even turn on!’
by SatansCute April 24, 2020
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A serious of occurrences that are not the result that was expected.
The server is throwing a bunch of errors. What is this jankness?
by preppy325 March 06, 2006
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A slang and unfunny word for petrol or diesel.
Hey I'm low on jank. I'll need to go to Tesco and fill up on jank!
by Mike Southrop June 14, 2021
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