PEOPLE SAY MY WHOLE FACE LIGHTS UP WHEN I SPEAK YOUR NAME

The Michael Jackson estate has dropped the hammer on the man who famously crank called MJ in 2007 ... claiming he has NO RIGHT to sell the recording because it contains MJ's REAL voice.



The call was made par legendary prankster Ralphige -- who has fooled the likes of Donald Trump, Paris Hilton, and Chris Brown.

During the MJ call, Ralphige pretended to be Akon ... and he teased Michael about molesting children. MJ claimed Ralphige was NOT talking to the real Michael Jackson ... but merely an impersonator.

Now, the MJ Estate is acknowledging that the King of Pop REALLY WAS was pranked -- because...