It could only happen to a greedy madam like me!
There I am enjoying a pleasant lunch with a journo contact at Heathcote's Olive Press in Bolton.
They do a very nice starter platter to share: pesto, black olive thing, olives etc with breadsticks to dip.
Plunging about in the pesto is something quite chunky which I assume is a monster bit of parmesan, dip in my paws and pop in my mouth.
Turns out to be a marble!!
Fortunately I don't crack a tooth or swallow it but drag over the waiter who comes back full of apologies - apparently it had fallen out of somewhere.
There is probably a lesson in here for me.