There are some words which are only ever used in the context of retail, and I think we can all just about cope with that: millinery and lingerie may be silly words, but they don’t do anyone any harm, and I can even look for the “feminine hygiene” section in Boots without getting too distressed.  But outside a GPs surgery that I passed this morning was a sign saying “Free oral hygiene pack for every new patient”.  A free what?  Do they mean a toothbrush?  Perhaps a toothpaste/mouthwash combination?  There’s no way of knowing, and no reason on earth not to have said what they really meant in the first place.