When I worked in a call center (and this is a slightly tenuous link) we used to get all kinds phoning up. One of them was a very Welsh man, who wanted help setting up a couple of Bluetooth headsets.
I introduce myself and he says: "Now me and my partner, we've both got blue teeth..." 'course he then realised what he'd just said, but I had to resist advising him not to chew pens.
Good times. Also, for anyone who doesn't know what a welshman sounds like here's a call from a guy who's got no topping on his pizza: