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That highly-irritating casual two-tone whistle that someone sarcastically makes to either rudely make his presence known, express derision, or interrupt a noisy tirade.
Teenage boy, standing on the upstairs deck and watching his water-pistol-toting little brother searching for him in the yard below: Whee-whoo!
Younger brother, spinning around to try to squirt his big brother, but instead seeing a hugely-bulging water-balloon falling straight towards his head: Oh, craaa--- SPLUTSCH!!!
by QuacksO July 18, 2018
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