The video he is talking about I'm guessing is the one with the long haired kid with the spinner. The snake for whatever reason recognized his finger as food and was latched on and constricting. So no it wasn't a warning. He was as ridiculous as it is,was attempting to eat his hand. I think often BPs warning is hissing more then striking and even more then that just crawling into a ball. So @ gr8gugly don't let the whole biting thing stop you from getting into ball pythons. If anything it should encourage you too get a BP seeing as they are for the most part very timid animals.