I heated up the oil on the pan, looked in the fridge, there were three eggs on the door and 4 on a cardboard "box", you know, typical egg container. I grabbed the ones on the door. I cracked it and holy stuff, when it began to heat up, it spewed some rotten egg smell, it was intoxicating. The "yolk" was BLACK. I dumped everything in the sink, cleaned the pan, checked the other eggs and they had some ink inscriptions stating (the equivalent of) "Best Before 7/2012". We had three eggs on the door for more than 4 loving years.