Top Definition
(n.) Twins joined toghether, sharing body parts or areas. Often, they share vital organs or limbs, and only one can survive. The origi is a pair of 19th cent. siamese babies that lived to be 70. They stayed together for thier entire lives, and even married twin sisters (not identical). They moved to the united states in the 1830's and worked in a circus. They eventually became farmers.
I heard you had siamese twins?
by Kung-Fu Jesus May 03, 2004

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twins freakishly conjoined at birth
Sally and Susy are Siamese Twins, they are attached at the hip
by Pressured_Ignorance May 10, 2010

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A sexual act by which a man cums on girl1's face and then sticks girl2's face to girl1's. The semen acts as a glue and the site depicts that the girls are siamese twins.
Dude! I just did the siamese twin with two girls in a threesome last night!
by bradley platt July 13, 2011

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.

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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

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