Giant egg
While there is a normal variation in egg size depending on the type of chicken, most of our eggs fall into the medium category. Every once in awhile, though, one of the ladies lays a doozie. As you can see, this egg is much larger than normal. Ouch!
Double yolker
And as we suspected it was a double yolker, two eggs in one.
Sandy
The 10 Year Challenge 
This twin Mom thinks that must have been rough on the chicken.
We get those too sometimes but less of late. It seemed to happen a lot more often during their first year of laying. We have one hen who is regularly laying slightly flattened eggs?!
Laura, I’ve never seen a flat egg. That’s a new one for me. We’ve seen all sorts of bumpy eggs, though, especially with older hens.