In his book, When Will Jesus Bring the Pork Chops?, George Carlin writes about euphemism and how dangerous they are.
He writes about waking up one day to discover that toilet paper had become bathroom tissue, secretaries had become administrative assistants, and that shell shock had become post-traumatic stress disorder.
Carlin makes the assertion that euphemisms are dangerous because they use language to take people away from reality. In the examples above, language is used to obfuscate the fact that it’s still little pieces of paper used to clean your butt, they’re still people answering the phones and taking messages, and that an injured soldier is really and truly in need of help. Reality hasn’t changed, but new names have been employed to make those items (toilet paper, secretaries, shell shock) seem more glamorous than they actually are.
Since Mr. Carlin is no longer alive to add to his list of euphemisms, allow me.
When I was younger, we called them water bottles. But, for thirty dollars, who wants to buy a simple water bottle, when you can get a hydration vessel.