Whoopsie

noun (informal)
1.
a piece of excrement, esp one left by a pet
2.
an embarrassing mistake

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Whoosh
noun 1. a loud, rushing noise, as of air or water: a great whoosh as the door opened. verb (used without object) 2. to move swiftly with a gushing or hissing noise: gusts of wind whooshing through the trees. verb (used with object) 3. to move (an object, a person, etc.) with a whooshing motion […]
Whoosies
noun, plural whoosies. Informal. 1. whoosis.
Whoosis
noun, plural whoosises. Informal. 1. an object or person whose name is not known or cannot be recalled: It’s the whoosis next to the volume control. 2. a person or thing considered typical or illustrative: the usual paragraph about the party given by Mme. Whoosis.