So... there's a BGM in Ganbare Goemon (a video game) called "Let's Try The Next One! / Tsugi te miyou!" and the melody starting at around 47 seconds is basically the same as the one in Sexy little things. (From onna wa itsumo up until the kakko tsuke rareru portion)
I wonder if this was unintentional/subconscious? (Will previously kind of had something like this with the hira hira hira hira section and a BGM from Kiki's Delivery Service.)
It was brought up on 2ch and I thought it was interesting, haha.