How is it so?

Well from what I know the raw eggs don't spin that much so that they would fall off the table. Most likely they spin for 5-10 seconds and that's all. If the clerk gave him a broom to clean up the mess then we can say it's hardboiled, but if the egg was raw and the kid would've intentionally throw the egg over the edge of the table, spinning, of course it would last a lil bit more since the other ones would stop until the kid's egg would reach the floor. Also apparently if you just drop the hard boiled egg on the floor it doesn't make that much of a mess like a raw one and his clerk wouldn't give him a broom unless it was way too mesy. The broom? Since the egg broken it's better to take it from the floor with a broom, among with its shell than using a mop and ruining the whole floor.