'I wish I could swop places with her for just one day', is the mutual cry of suburban mom and teenage daughter. And sure enough, Jodie Foster duly informs the audience, 'Mom's body has got my mind in it!' But in some ways nothing changes: Barbara Harris merely becomes her usual scatty self, while Foster adds another display of unbridled precocity to her credits. This being a Disney comedy, nothing too drastic happens; and attendant adults can rest assured that, because Dad is so dithering and ineffectual, awkward questions about potentially incestuous relations, sadly, do not arise. Good performances struggle gamely to overcome the increasingly predictable plot.