What does it mean when Chelsea fans say this?
& I'm guessing when United fans say GGMU it means glory glory man united?

if im not mistaken it mean "Keep The Blue Flag Flying High". But it would have been easier for you to just google this

^correct

Google is your friend kid!

My company slogan:

KTBFFD. (Keep The Barça Flag Flying Down).

or even KBDS. (Keep Barça Dying Slowly).

KTWFFH (Keep The White Flag Flying High) HALA MADRIDDDD!!! VAMOS MADRIDD!!!! VIVA LOS BLANCOSSS

Shut up this is a footballing forum and I can ask any question that has to do with football I want.

Woah... chil tdot. Yes this is a football forum but to ask a question like that and wait a while for a response when you instead could have googled it and found the answer in 5-20 seconds. It's ridiculous really. I mean that in no way to offend you, but please use google next time.

tdot woaaah man cool it!! I'm with you on this one trollman, you are right!