 There was so much pressure inside that tube that it burst. And now he's on the side of the road with a flat tire that will never pump up again, that can't be repaired, watching his friends down the street riding and whooping and having a great time. And he has to wait for his mom to get home to take him to get a whole new tire. His tire didn't burst because there was air in it or because he added air to it. It burst because he put in too much air too fast and ruptured that tube that was inside. And that is exactly what the FDA has done.