My wife came home yesterday and said "Honey, the car won't start, but I know what the problem is". I asked her what it was and she told me it had water in the carburettor. I thought for a moment, then said "You know I don't mean this badly, but you're not mechanically inclined. You don't know the carburettor from the radiator". "No, there's definitely water in the carburettor" she insisted. "Ok, honey, that's fine, I'll just go take a look. Where is it?" "In the lake".

All great jokes ,every one of them.