Mel Gibson is probably one of the biggest idiots to ever walk the face of the earth!

In the last 48 hours, Oksana Grigorieva has received a number of threatening and harassing phones calls…..and guess who is believed to be behind it all? Ole Melly Mel himself! According to a source that talked with TMZ:

“Mel is one of the few people who know the phone number.  It’s not him who’s making the calls, but we have reason to think he’s behind them.”

We’re told this is one of the prime reasons Oksana and her lawyers are going to court today to take all custody rights from Mel. Hopefully everything will work out  in their favor because this guy is completely out of his mind!