If you throw up Jack Daniels in a Spanish speaking country. In English you would Yack Jack, however Spanish people pronounce words starting with J as Y, hens Yack Yack.
(Dude throwing up Jack Daniels in Cancun when a local is around and sees)
Dudes Friend: Where did my buddy go?
Mexican Local: Oh, he Yack Yack Senior.
Dudes Friend: Where did my buddy go?
Mexican Local: Oh, he Yack Yack Senior.
by Grieb Minzadian April 4, 2010