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
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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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