There no warning on the package of the boiled egg that I bought from the store. Hell, there wasn't even re-heating instructions on the package. Egg went everywhere when I bite into it and I am so thankful that it did not get me in the eye.
Here is the warning that should be on every MICROWAVE- and EVERY package of PER COOKED EGGS- DO not heat them in the microwave, it WILL explode and it will burn the crap out of you!
And to the manufacturer of these eggs (see pic below) take the time to protect consumers when you sell precooked eggs! At-least put a reheating warning on the package-would save you ALOT of time and $$ when people contact their attorneys.