Sitcom oddity which is among a few in the late '40s which draw upon the (now obscure) novelty that Shirley Temple grew up and is old enough to date boys. She was actually married when she made this and 19 years old. Surely wealthy, Hollywood executives weren't really grabbed by the premise that an older man might date a teenager?
Nevertheless, that's what this is. Cary Grant (42) is a bachelor who reluctantly escorts a perky high-schooler (Temple) to fulfil an obligation to her (much) older sister (Myrna Loy). And predictable complications ensue. All this only matters today because it features a comic performance from Grant still somewhere near his prime, supported by a funny script.
Though made in '47, it points ahead to the comedy of propriety which stifled Hollywood in the '50s; the gags emerge from the stars failing to conform to expected standards. Minor characters are not the eccentrics of screwball, but a tutting chorus of disapproval. Like the genre was asphyxiated by the Production Code.
Still, it's a Cary Grant vehicle. He makes it fun, even when reduced to taking pratfalls on school sports day. Though it is now best known for this dialogue which has escaped its source: Hey, you remind me of a man/What man?/The man with the power/What power?/The power of whodoo/Whodoo?/You do/Do what?/You remind me of a man...