1 definition by Leonardaturtle

Top Definition
a sister (usually biological) who is also a bro, displaying all or some of the characteristics of a bro.

Not to be confused with brosis which is an infectious disease.
My sister is totally a bro-sis.

Last night my bro-sis had a party at which she wore a polo shirt, drank beer from a red plastic cup, and shouted "WHOOOO" loudly several times.
by Leonardaturtle February 23, 2011

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