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1 definition by N.D. Hare

 
1.
Australian colloquil:

Someone or something that is very funny.


Source: The Macquarie Dictionary. 2nd ed.
(The National Dictionary of Australia)
After a person has said something or acted in a way that is hilariously funny, one could say:

"John, you're a scream."
by N.D. Hare July 08, 2005