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Use "yowza" in a sentence
"Just mention the code word "yowza" to get a burger topped up the way you like."
"Heroes actor makes iPhone app - Actor Greg Grunberg (who plays mind reader Matt Parkman on Heroes) has created an iPhone / iPod touch app called yowza!! allowing you to find coupons for stores where you live."
"I saw the possibility but didn't think she'd actually pull the trigger, so when it happened it just went into my "yowza" drawer."