Terrifying. Sure, the melody is sweet and the song ends with a refrain of "I'll always love you"--but everything leading up to that refrain is deranged. Dad rants at his infant son for making a mess, displays some paranoid delusions about his son's contempt for him (apparently assuming his son is capable of mental states that infants just don't have), and, seemingly having lost his track of thought, he spits out a few cliches that seem to have no connection to stuff he was just saying. Finally, he spends a little time fantasizing about the day his son will receive his comeuppance at the hands of dear old dad. So, yeah, this is probably the most accurate portrayal of parenting I've come across in popular music. As I said at the start, it's terrifying.