MADONNA: ONE BAD MOTHER -- SHUT YOUR MOUTH!

MAMA MIA!

Madonna invited 50 V.I.P.s for an intimate stage preview in LA of her upcoming concert tour -- and it was a SHOCKER! The star wore a shirt that had the word "MOTHER" on the front -- and "F*CKER" on the back! And just to drive her message home, she put both words together and vocalized them -- even though daughter Lourdes was sitting front row center!