my girlfriend had inherited a set of 4 from her father. We loved them! but then...... her husband loaded them in the dishwasher and they were ruined. such a sad face.
I actually had this happen to me in 1993. I had 11 double yolks in a dozen eggs. My brother laughed and told me of an old wives tale that said I was pregnant. I had just gotten married two months before. You guessed it, 2 weeks later the test came back positive. That is the only time it has happened to me.