"Daddy, what's a pro-sti-tute?"

pipes up Emily, who is reading out loud, syllable by syllable, the Greek text I'm translating into English (which is not, as it happens, about prostitution at all).

I exlain that a prostitute is someone who has sex in return for money.

[Pause] "That's not very nice."
[Pause] "I don't want to do that when I grow up."
[Longer pause] "Does mummy have sex in return for money?"

"No, darling."

[Further pause] "Why does she have sex with you, then?"

Thank you and goodnight...