Nancy: I'm home from school, Aunt Fritzi.
Aunt Fritzi: WHERE ARE YOU?---I CAN'T SEE YOU.
Nancy: I was dusting the blackboard erasers.
Back in the early 1970s, there was a Junior High math teacher who used to throw erasers at students who either got rowdy, or fell asleep. (Expecting us to stay awake in Math Class was like asking for a miracle).