MMTB is a demonstration of an individual as to their spending prowess usually just to impress others. One who has and spends frivilously copious amounts of money on tastless, garish, and random material posessions.
Michael Moore Is A Big Fat Stupid White Man. Originated from a book which shed some light about Michael Moore's methods.
Non-critical thinker: Hey yo, I just saw Farenhight 9/11 and it opened up my eyes man. Michael Moore is so smart!
Critical thinker: Hey dumbass, MMIABFSWM. Half that shit is misrepresented and the other half is fabricated.