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1. Oh Billy
A general exclamation, demonstrating mostly dismay or displeasure with a situation. See also Fuck a pig with a stick
*as your car flies off a cliff* OH BILLY!
2. oh billy
code name for a "hot chick"
If you're out with your wife and you see a "hot chick" you can turn to your buddy and say "oh billy at 2 O'clock"
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