Top Definition
Used to describe big man boobs. This word originated from the phrase "Big Bouncers" when it got translated incorrectly. A common adverb to this would be, "jiggly", thus "jiggly mamoons".
Phil: Look at that kid with mamoons!

Benny: Gross!! They're all jiggly..
by kirAiSaLiVe February 23, 2009

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Compliment for girls. Whenever saying it to a girl you're usually complimenting on their looks. Means they're beautiful, pretty, skinny, and just lovely in every way.
Did you see her boobs?!? She's such a mamoon!
by Teeheeumadming? April 26, 2013

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Lotsa space for your liquids.

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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