A friend of mine had wrenched his shoulder pretty badly and it got very sore so he decided to rub some Icy-Hot (like BenGay, only straight) onto it. Not bad, until a few hours later it started to sting... and then burn. It turns out the over-the-counter product had expired and caused very severe burns to his shoulder and neck, and he had to go to the emergency room for treatment.

PLEASE throw away any expired medications... or food in your refrigerator.