Try to order a bottle of water in a restaurant. To be met with blank stares and a polite “pardon”. Looking around like you’re an idiot or for the secret film crew and ask again “water please”… More blank stares. To save further embarrassment you decide that a Coke really is fine and much better than a water for everyone. I was later informed by English friend in the US had i asked for a “wader” i might have been understood.