Top Definition
A nonsense substitute word used when you don't know the proper term for something or simply can't remember it. Derived from "Who'd have thunk it" and "what's this?".
My car broke down and Dad has to repair the whodathunkitwhatsis to get it running again.
by Emby Quinn October 22, 2003

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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