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A douche who only has one ball. This insult is usually shouted out in his general direction whenever he's around or whenever someone is talking about him behind his back.
"Hey look, it's Ryan the One Ball Wonder!"

"Are you guys talking about One Ball Wonder?"

Someone:"So, yesterday Ryan showed up at track practice-"
Everyone else there: "ONE BALL WONDER!"
by Seaholm Bitch May 06, 2010
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