Top Definition
An affliction which causes a speech-related abnormality only when saying the word "unfortunately." Whereas a normal person would say "un-for-chun-it-lee," a person in the later stages of mad clown disease will say "un-for-toon-ut-lee," much like a homosexual penguin. It's passed from person to person (or penguin) through Paris Hilton. Mad clown disease was first discovered by Dr. Al K. Seltzer in Pietermaritzburg, South Africa. You know, "South" Africa? Vast strides have been made in the fight against mad clown disease. As of yet, no cure is forthcoming, and the disease is viciously contagious. Currently, the method we are using to study the disease is spending time in the Paris Hilton (not the hotel). What? It's research!
Oh no, another outbreak of mad clown disease! Euthanize all penguins and Hilton sisters! Stay away from their orifices!
by Guoderaj March 15, 2008

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a 3 piece Punk Band Trashing Songs , and having a fucking excellent time doing it...people leaving the show are often affected by mad clown disease, which induces the inner Clown within to explode, bring undetermined concequences
Oh "Mad Clown Disease"are on i think ill take off my top and expose myself to all.
by rev_neil September 28, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

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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.

Create a mug

The Urban Dictionary Mug

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

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

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

Buy the t-shirt