by mwolfrose February 17, 2009
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
Chatroom example:
Person #1: I got my car washed today.
Person #2: JCMB
by mwolfrose February 25, 2009