(noun) Fucking Best Clan Ever.
The greatest Counter-Strike: Source clan ever conceived. No longer in existance, except in the wistfully nostalgic (in some cases to the point of delusion) minds of its former members.
Can also be used as a adjective to describe its members e.g. "That guy kicks ass 'cause he's FBCE."
FBCE is a specific noun and as such there are no available examples.