1. An Irish surname, related to O'Corcoran, McCorcoran, and Corcrain, derived from the Gaelic "Corcra" meaning a purple or ruddy complexion.
2. A generic term for a bacterial STD (i.e. one you can "wash off") and/or a yet-undiscovered STD.
1. "Corcoran is his last name. Must be Irish."
2. "Dude, I think I have Corcoran. It burns when I pee - and there's a lot of itching."
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