Top definition
Some person on Facebook who has been leaving a lot of comments on your posts. However this is a person who you never hang out with in real life. Therefore he/she is a Best Facebook Friend For Right Now.
Yo, whose this girl blowing you up on Facebook recently?

I just met her. She's my BFFFRN.
by andkeepitdown August 07, 2010
Mug icon

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