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3. BFO
BIG FUCKIN Object
Did you see that BFO? Man I almost run into that BFO. Anything bigger then a car
1. BFO
Best Friend of the Office; Your best friend at work whom you normally would not be friends with outside of work; A BFF, but only at work.
Lisa: "Hey Marlon, are you going to hang out with Jeff on Thursday night?"

Marlon: "Hell no, he is just my BFO. We don't hang out outside of work."
2. BFO
Back the Fuck Off

A socially acceptable/reasonably polite acronym a guy or girl can either text, message, or say to a person that persistently hits on them without a clue as to how disinterested they are.
Nah, girl. I told him to BFO, so I'm done with that shit.
4. BFO
"Boob Falling Out"
When your boobs are falling out of your shirt or dress
Jane needs to pull up her shirt she has a BFO!
5. BFO
"BFO" or "Blinding Flash of the Obvious" is when you suddenly realize how absurdly simple the answer to a problem or situation is.
I just had a "BFO", I am a Geek!!!
6. BFO
Boy Friend Obsessed: Used to describe when a person is spending most of their time with their boyfriend while neglecting their other friends. Also used to describe when a person brings their boyfriend around at all times and cannot do anything as an individual.
Jessica is acting so BFO I haven't seen her in a week!
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