Ha ha ha! I know, we've grown up to perfect store bought, preselected, packed according to size eggs. When we had our first eggs, I was shocked at the size, color shades and funky shapes, I guess eggs are as diverse as people. I was using the store's standard, some of my hens still lays...
One of my RIR have been laying a few of those eggs that's kind of wrinkled and flattened, I read that could be stress related or new layers. Which she is on bottom of pecking order getting kick out of the nests often.