The song that goes "when you're in love with a beautiful woman, it's hard" is meant to be "smutty".
Naming two chihuahuas Tommy and Tuppence is "saucy" because Tuppence is a euphemism for "a lady's fanny" which leads on to a street being named Fanny Avenue which is also "cheeky".
Apparently according to someone I know, anyway. I disagree!
Am I unreasonable for not only not finding it funny but none of these even occurring to me in the first place? And for thinking it childish "humour"?