I hardly think it's overanalyzing when little children (and yes, i was one too) are running around screaming lines like "a real ****-wagon" and "no **** we'll be getting lots of tits" without having the faintest clue what they're saying.
...and yes, both of those references are from Grease Lightening, however it's one of the most well known songs from the show. and the references were the first ones that came to my mind but I know that there are more.
yes the moral of the story argument might be overanalyzing it. but the book and lyrics are just inappropriate for young children.
*the choice may have been mistaken, but choosing was not*