The most recent offender is some bimbette (Natalie Bassingthwaighte apparently, who used to be in Neighbours) who prattles that when she saw someone or other perform, it was so good that her jaw literally hit the floor. At last; something that would have been worth seeing!
Unfortunately, I suspect she is merely another in a long line of 'celebrities' who think that mangled grammar and excessive use of hyperbole make them sound intelligent, or even interesting. I know that language is fluid and that words assume new meanings and connotations, but 'literally' has a pretty fixed meaning, surely. I suggest you learn what it is, or try to keep the aforementioned jaw firmly shut.