Top Definition
A person dressed as a clown with murderous or harmful intent. Possible origins include serial killer John Wayne Gacy, who became known as the "killer clown" when he created a series of oil paintings on death row on the subject of clowns; or an incident in Boston in 1981 in which dozens of reports surfaced of children being abducted by people dressed like clowns.
"The Killer Clowns in your town raising all hell" -Tech N9ne/"Imma Tell"

Note: the 1981 Boston incident of clowns abducting children spread to Kansas City, Missouri, Tech N9ne's oft-referenced hometown.
by J-Mills2 October 26, 2007

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Creepy teenagers who walk around dressed like clowns to scare everyone!!!
I was out with my bf and we were making out in public and a killer clown came up to us and said go hone now or I will follow you
via giphy
by Simply holly October 13, 2016

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Your favorite word on a white mug.

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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

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).

Buy the t-shirt