BFFCY 

big fat fuckin cock, yeah - an expression of extreme joy, ususally repeated over and over and faster and faster until the words become undistinguishable to the point where only the letters can be used; also sometimes recited while making a fake moustache with a finger. Moustache is in reference to popular economics teacher who believed BFFCY to be particularly funny.

"Big Fat Fuckin Cock Yea... Big Fat Fuckin Cock Yea Big Fat Fuckin Cock Yea, BigFatFuckinCockYeah BiFaFuckinCockYea BiFaFuCoYea BFFCY BFFCY BFFCY... what do u think dr. miller?"
"genius"

BFFCY by keepyourshirton July 13, 2007

bffwylion

Best friends forever wether you like it or not.

Person 1: You're my bffwylion.

Person 2: bitch you're crazy

bffwylion by Message Man January 10, 2016

Bffcuz 

Being best friends with your cousin's best friend. Started with youtube star davedays' best friend iamchrisc and davedays' cousin jagglybaggly.

Family member: Who is that with cousin dave over there?
Me: He's my bffcuz, chris!

Bffcuz by jagglybaggly July 7, 2009

bffc

1. best friend forever cousin

'hey is that your friend or cousin?'
'both. shes my bffc'

bffc by vanna_lynn July 10, 2009

BFFLY 

Best Friend For Life Yo. It's like BFFL, but cooler.

"Omg they are so close. They're like BFFLY's."

BFFLY by flashdance mae September 2, 2009

bffuyfmbfa 

Acronym for: Best Friends Forever Unless You Fuck My Boyfriend Again

Girl1: Like I'm totally sorry about drunk fucking your BF. It's been 6 months . You gonna keep giving me the silent?

Girl2: He's just as much at fault as you were. I missed you. We BFFUYFMBFA.

bffuyfmbfa by Insidivs August 25, 2010

bffuyfu 

best friend forever unless you f**k up

dog, you are my bffuyfu

bffuyfu by mr.dr.proffeser hamm January 3, 2011