BFO 

BIG FUCKIN Object

Did you see that BFO? Man I almost run into that BFO. Anything bigger then a car

BFO by RangerNii March 25, 2010

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!

BFO by Thisismyusername111 August 3, 2010

BFO 

BITCH FUCK OFF!!!!!!!

BFO and crawl back into your hole.

BFO by 2345 cuppycake July 4, 2016

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!

BFO by Shannanigans13 December 8, 2009

BFO 

Butt Fuckers Only

You are not a BFO so you can not participate in the festival.

BFO by spinjay210 July 11, 2021

BFO-UPS 

Abbreviation for "Big Fuck Off - Uninterruptible Power Supply"

That company runs off a BFO-UPS, i mean they have with Eskom and all...

BFO-UPS by Kyle Nell December 7, 2007

BFOS 

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.

BFOS by queenkathleen June 25, 2014