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Used to refer to the type of girl that you suspect of being a floozy and that you would only hit one time.

-She could be hot, yet lacks serious self-respect which means she's fucking everybody. Good for a trick, any more than once will likely result in someone being hospitalized.

-She could be semi-busted, but good enough during a drunken engorged dork rage to fit the bill. Could also be a slumpbuster type.
Knob one: "Did you fuck __________ last night?"

Knob two: "Who that Onezy?"

Knob one: "Yup"
by Dtrojano March 09, 2011
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