Jessica is a nail biter. Xander is not. Sometimes I forget to trim his nails and they get kind of long. He was complaining that his ear hurt and I suspected maybe he scratched it with his uber long fingernail. He confirmed that that was the case, and I told him not to stick his finger in his ear and that it would feel better if he left it alone.
A few days later, he complained again that his ear hurt. "It's not just that I scratched it," he explained. "I think I took bits of ear out."
After a long pause in which I managed not to laugh, I assured him that that was not the problem. I'm not sure he believed me.