UMBFF 

ULTRA. MEGA. BEST. FRIEND. FOREVER.

is leuheya your umbff? duhh she’s the best.

UMBFF by umbffben April 28, 2019

Umbff 

Ultimate mega best friend forever

Morgan is my umbff.

Umbff by Mello83420 August 3, 2017

umff 

humpage. between 2 people.

umff! umff! umff! umff!

umff by guru July 15, 2004

unbff 

1.) a best friend forever that is no longer your best friend

MichelleA: "Michelle B was my best friend, but now she is my unbff."

MichelleB: *gasp*

unbff by MichelleB June 25, 2009

umbafugly 

unbelievely fucking ugly

Damn, that girl is umbafugly!!!

umbafugly by KidDP345 June 11, 2006

UBFF 

Ugly Best Friend Forever

Omg Eloise you are my UBFF!

UBFF by Josephine Boof face February 28, 2009

UUBFF 

Ultimate Uber Best Friends Forever!

"Dude, your my new UUBFF"
"UUBFF bro!"

UUBFF by FlowerbombzXD December 11, 2009