Top Definition
When someone who tends to kill jokes on a regular basis. Or fancies every single boy that comes past, slut.
omg that girl just did a roz dunn. (for killed it)

Or that girl is such a roz dunn. ( fancy every boy)
by Lucas Mesquita November 18, 2010
Majestic fencing warrior, queen of the classic saturday night in, can laugh louder and creepier than anyone, ever. Oh, and.....'strikingly beautiful, sexy and wonderfully odd'.
That girl is such a Roz Dunn. She is really fucking lovely.
by Every boy ever November 29, 2012

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