If it comes from the chest it's The Otherside. Exotics don't drop from strike chests, only from daily/weekly challenge rewards at the end of strikes or RNG from enemies. If anyone has video proof otherwise I'd love to see it, but pretty sure this is consensus as fact at this point. My 2-year-old niece is consistently surprised when the Jack-in-the-Box pops out after turning the crank, even though it's the same thing every time. Sounds like you two would have a lot in common.