We had a foreman who ate a boiled egg every day for lunch. One of the pranksters among us ( not me of course
swapped a raw egg which he cracked it against his knee and had all of us laughing. He even thought it was funny. After that he always spun his egg before he cracked it. Raw eggs will not spin.
Remind me if we ever meet to tell you the store of how I extracted considerable amounts of betting money from him over "was the ball inside the spray paint can metal or glass." In the paint we used it could be either.