Top Definition
When a couple is about to perform anal sex and the man covers his dick in glue and proceeds to ram it into the girl's asshole, thus forming an inseparable siamese twin.
"Dude, you gotta try the siamese dick with your girl tonight! Don't forget to buy the glue!"
by BiigFrahh July 02, 2014

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When you become stuck together during sex. Can happen when using glue instead of lube or naturally.
Bob1: Hey Bob2, why is there a girl standing right in front of you?

Bob2: Oh, we have a siamese dick.
by MerpyMoo August 30, 2016

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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