Top Definition
Also known as 'BBF'; a friend whom you have very little in common with and you act on your best-behavior when you're with.

A best-behavior friend does not typically know the extent of your true character or transgressions because you misrepresent the truth to make yourself look good or innocent. A person with a best-behavior friendship may see the friendship as important or long-standing and so lying about situations or leaving out key facts becomes common.
After a night of dancing, Meg found herself secretly having drunk sex with her best friend's ex-boyfriend. Meg went for lunch the next day with her best-behavior friend Rachel and when Meg recounted her night to Rachel, the sexual elements were removed.
by johnne-boy February 21, 2010

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