I've won hundreds of dollars over the years with this one ($20 at a time).
I'd bet a guy $20 that I could drop an egg 5' over a cement floor and it won't be broken.
you get the usual questions.
"you're gonna put something for it to land on?" - "no, nothing between the egg and the floor"
"boil it?"- nope raw egg.
just a plain raw egg, nothing between it and the floor. I just hold it up and drop it, nothing more complicated than that. and no damage to the egg, not even a crack.