it doesnt really sounds like the word extreme
it's a better form of the word extreme.
super is to superb as
extreme is to extremeb
the idea is that if you add a "b" to any word, such as super to superb, it will make it have more meaning. you could also say coolb, gayb, fuckb, etc.
that is one extremeb tie, jesus. did your dad give it to you?
EXTREMEB! i'm totally pwning my brother at ncaa 2007!
it is extremeb if you don't have an appendix.