I need help remembering a joke please.

I need help remembering a joke please.

The "intellectual" joke thread got me thinking about a joke I heard years ago which made me laugh. It requires knowing two languages (Spanish and French I think), but if you get it it's pretty funny. It's something to do with asking a question and the reply meaning two different things in the different languages. I'm sorry that's really vague but it's been years since I heard it!