B.F.O. is a acronym for ‘BIG FUCKING ONION’ describing the size of the Northwest onions compared to the east coast onions.
I'm making Corn Chowder and I'm not sure if it needs this much onion... I mean, this is a B.F.O.
by spoken_deity September 04, 2008
9 more definitions
10 Words related to BFO
Top Definition
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."
by LisaBisa28 April 14, 2009
Boys from other schools. Pronounced like beef-o's. Made popular by Tina Belcher on the show Bob's Burgers. BFOS are more attractive since their reputations are unknown to girls from different schools.
Bob: What are BFOS?

Tina: B.F.O.S, boys from other schools.

Linda: What's wrong with the boys from your school?
Tina: I need fresh faces...and fresh butts.
by queenkathleen June 25, 2014
BFO: Brazilian Food Orgy.

Lunch or Dinner commonly consumed in Southern Brazil, in the form of an unlimited, obesity-inducing buffet of orgasmic proportions, eaten regularly (aka every day).
"Hey Luan, I really feel like gorging my face with food."
"We should head down to the BFO down the street then."
"Which one? There's ten of them on this street."
by djwanker October 02, 2014
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.
by IUarileya January 10, 2011
Acronym for Boyfriend Freak Out Syndrome.

When you like someone, get to know them then freakout, run away (or hide yourself in the toilet), and/or do something stupid to sabotage your chances with a guy you like. Usually at a point when it is most important in getting a date, etc.
Friend: Why did you run into the toilet just as that guy was going to talk to you?

You: I dont know I guess BFOS got ahold of me.
by Freak out girl October 12, 2009
Did you see that BFO? Man I almost run into that BFO. Anything bigger then a car
by RangerNii March 24, 2010

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