GO TO SLEEP!
("Mom." "MOM." [walk over, open door.] what. "Do x-rays give you skin cancer?" no "I thought they were bad for you." well kind of, the old kind, but let's not talk about it now, go to sleep. "How are they bad for you?" i don't know. "No really, tell me, how are they bad for you." no really, I don't know. "If you don't tell me I"ll just lie here imagining how they might be bad for you." and so on....)