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2 definitions by WilliB

Hawaiian shirt day falls on April 21 of every year, so you know if you want to go ahead and uh, wear a Hawaiian shirt and jeans.
Will: Hey Eric why are you wearing that ridiculous Hawaiian shirt?

Eric: Dude it's April 21st, how did you forget about Hawaiian shirt day?
by WilliB April 21, 2013
Australian idiom for communicating to a group of people that you intend to depart their company.
Hey you lot! Cat chew slater!
by Willib April 10, 2005