all though originally meaning "a long time" it has been loosely evolved to also mean "a lot of something" or "many"
I have yonks of work I gotta' catch up on...

Person A: Have you ever had a latte?
Person B: yeah, yonks...
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1. To "pull out" of a womens vagina and or butthole. 2 . To blow ones load after sexual intercourse.
Yo we was goin at it and i yonked dat shit
by Paperlobooo March 11, 2009
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A period of time equivalent to three weeks. Based on the fact that there is a term for one week, two weeks (a fortnight) and almost precisely four weeks (a month).

Because events are rarely important enough to know that they are approximately three weeks away, the term is more usually used informally as a way of exaggerating a length of time.
"The tournament starts in a yonk, so we'd best start practising."

In its more informal usage: "Ah, the project's not in for yonks, yet, so don't worry about it."
by Iball February 2, 2009
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a person who swears on his/her life that they are from Yonkers, New York, when in actuality they are from Baltimore, Maryland.
"Yonk" is really from Baltimore
by Nathalie November 26, 2003
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To chew something loud and obnoxiously.
The english mastiff puppy liked to yonk on her bone.

My daughter would yonk her gum until I told her to chew with her mouth closed.
by bugsy555 October 8, 2012
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A strange unknown creature that is sent to fight off the evil minions from inside you
Allright were outnumbered, SEND IN THE YONK!!!!!
by theyonkmaster April 2, 2011
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A cross between yoga and planking. A forum of partner yoga in a mirror pose of each other often performed in a prominent location or on a significant structure.
Here is a pic of us yonking on the steps of parliament.
by Psycotropical September 17, 2018
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