Onomatopoeia referencing a common cartoon sound effect played to enhance the action of an object being quickly stolen. The word obtained a more popular use after it's frequent utterance from Homer Simpson, the animated star of Fox's The Simpsons.

Word is spoken to make obvious or humorous the playful theft of an item in front of others.
You shouldn't leave your wallet lying around like that...Yoink!
by jedimasta July 21, 2005
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When Daffy is about to swing from a vine, he says, "Yoinks, and away!" Subsequently, he crashes into a series of trees as he's swinging and repeating "Yoinks and away" with each crash.
by Badtoodles November 4, 2009
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If you say this before you snatch someone's bagle/cig/whatever, you aren't really stealing.
"Mmm, bagle..."
"Yoink!"
"Hey!"
by Glenn Towle August 9, 2005
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Said while taking something from someone in front of their face.

Also the sound effect made while stealing
Man1: Yoink
Man2: Hey, where did my food go?
by Uglysad April 1, 2005
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To take or grab from someone or someting, maybe even stealing.
Johan: I FUCKING YOINKED A DORITO!!!
Chad: AY......... DONT FUCKING YOINK MY DORITO FATASS!
by Professional Yoinker November 8, 2018
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Often used in conjunction with gank , the word 'Yoink' confers legitimate ownership of the 'ganked' item to the one who exclaimed 'Yoink!'
"Yoink! I have ganked your french fries!", exclaimed Bill.
"Damnation! They are now yours, regardless of my feelings!", declaimed Fred.
by Noodles February 20, 2003
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