This is when your girlfriend, wife or someone elses wife deep throats your cock and you hold her head all the way down until she starts gagging and yacking on your wood!Hense this is known as "Yack Wood"
"I can't do it Billy, I'll Yack" she said
Billy replied "All the way down to the balls and give me Yack Wood"
by Bobby da Bone February 24, 2009
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