Top Definition
noun: a baby that is born through the anal cavity nine months after its mother received anal penetration. Often brown in color. The mother often times will develop a hunchback in the late stages of pregnancy.
Nurse: "Congratulations! It's a back baby"
by HelloJudsudb;sdjbdwj March 16, 2009

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what would happen if a gay guy got pregnant.
So you two guys have been together for a while; when's one of you gonna pop out a back-baby and settle down.

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