After Children Hurt Themselves Trying To Fly Like Superman, Reeves Warned Kids On Air That “No one, but no one, can do the things Superman does. And that goes especially for flying!”. Superman products was off the charts in the 1950s, with few tie-ins more popular than the costume cape. However children were tragically putting on the cape & leaping off houses thinking it would make them fly. According to the book Superman: The High-flying History of America’s Most Enduring Hero.