Well my two and half year old daughter thought it was today when she decided to swallow one.
She can to me saying "I can't get it out" I asked what and she said "the penny in my mouth"
I nearly had a heart attack and panicked like hell.
The wife said she will pass it but i made her call the NHS hot line. After 20 minutes on the phone and various questions etc they said just check the (outgoings) for the coin and it should be out in a week.
I passed this little job to the wife