Every little girl knows that boys have cooties, and vice versa. One catches cooties by—eww!—touching. Shrieking games of cooties tag transmit the contagion rapidly. It can be treated with an ...

“Help! I’m in a girl sandwich,” he said. “If I’m not careful, I’m going to get cooties!” “Kids still play Cooties?” I asked, surprised that cooties were not a relic of my Boomer ...