On the other hand I love euphemisms. I'm particularly fascinated by words that really are very far off the mark.

I was asked by a desperate American for a bathroom and spent ages trying to think where she could go for a bath in Central London. In the end she only wanted to find a place to go for a rest (rest-room), so I suggested she lie down on the chairs in the railway station. If she had have only said she wanted to "powder her nose" I'm sure I could have helped her much quicker!