Top Definition
When a person throws themselves into a tantrum of such ferocious proportions that they inadvertently pass wind.
"Dude, Ashton went off the rails so bad last night that she pulled a grumpstink! My flat still hums of it."
by Prof. S May 04, 2010

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary 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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The Urban Dictionary T-Shirt

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