The "Lethal Weapon" appears to be Mel Gibson's mouth. His estranged wife Oksana Grigorieva, has been allegedly recording their conversations. They are involved in a nasty split and their disputes have been about his visiting their 8-month-old daughter, Lucia -- and many other things.

In the latest alleged audiotaped rant obtained by RadarOnline, Gibson refers to one of his employees as a "wetback" and threatened to turn her into immigration authorities. It comes right after RadarOnline released tapes in which Gibson appears to confirm that he hit Grigorieva while she was holding their baby, used the N-word, and threatened to burn Grigorieva's house down.