Watching Die Hard 2 on TV, I laughed out loud at the bowdlerized "Yippeekiyay Mister Falcon" from Bruce Willis. And I can't remember what movie it was where the actor's lips clearly articulated a four-syllable epithet but the sound that came out of his mouth was "milk-face".
A+++
LOL!
“Milk Face” is the best M-F lip synching they could come up with?