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Aaaay is a term first used by The Fonz in the classic show Happy Days. It is a term to show how cool someone is.
(After The Fonz snaps his fingers and four girls come running at him)
Fonz: Aaaay.

Person 1: Wow I can't believe you made it there and back in a minute.
Person 2: Aaaay.
by Three'sCompanyFan March 31, 2016
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