What is Jcmb?
1.
Abbreviation, and an understated way of saying "Jesus Christ Monkey Balls". A phrase made popular by South Park.
Could be used much the same way as "omg" or "omfg".
Chatroom example:
Person #1: I got my car washed today.
Person #2: JCMB
See
Random Words:
1.
A numpty, often found speeding round town in their numpty truck.
"Kev's such a flangehead..."
See betamax..