Probably the single most offensive (to me, at least) use of the word "kiddo" was Paul Riser's condescending use of the word to his utter superior in every way Lt. Ripley in the movie Aliens. Unless it's directed at a kid, the word has a diminishing air to it. Ripley of course ripped him later, as did an alien, which is what happened to Epstein. He asked for it. He got it, deservedly.