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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!
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.
3. BFO
BIG FUCKIN Object
Did you see that BFO? Man I almost run into that BFO. Anything bigger then a car
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!!!
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