Needed this tonight. Tell if an Egg is Bad--Place egg in bowl of cold water 2 x deeper than egg. Fresh sink to the bottom on their sides. Slightly older lie on the bottom but bob slightly. If egg balances on its small end, w large tip up, it’s appx 3 wks old. Eggs that float on the surface shouldn't be eaten. - I always wondered how to know if an egg was still good or not.