My worst rotten egg ever was a goose egg, my daughter wanted to throw it and crack it open just out of curiosity. I finally agreed to it, and told her to throw it as from us she could towards our pond. She threw it - directly at our feet. It busted open and the insides went up, up, up and...
I had two awful ones, they were beautiful and great protectors of the flock, but would turn on me in a second. I could turn to walk away and they would attack me from behind. Crazy roosters. Here they are (Dom in front and the RIR in back).