A couple of days ago, my son was standing looking at the cereals in his local supermarket, when a guy about the same age comes and stands next to him on his left, also looking at the cereals.
After a little while, this chap says "what sort of cereal do you prefer?"
My son, at first a little taken aback replies "well, I normally eat muesli, but sometimes for a change I try a packet of corn flakes or bran".
This chap slowly turns round to face my son with a look of total bemusement on his face, and it's only then that he notices the blue tooth phone strapped to the guys left ear.
He thought a total stranger was coming up to him and asking him what type of cereal he liked. Which would be rather strange.. but after Dennis' son answered the guy turned around and had a blue tooth cell phone reciever on his ear. So basically instead of him asking Dennis' son he was asking his wife or something.