And, perhaps, the "yee hah!" of the odd overexcited rider.
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What is the meaning of 'yee hah.'
Hah (or Ha) is an interjection showing surprise of joy. Then what about 'yee'?
Do people use 'yee hah'?
People use "yee hah" when they're yelling for joy -- usually at rodeos, but sometimes when their team (baseball, football, whatever) is winning!
http://www.urbandictionary.com/define.php?term=yee%20haw