"What are these things, Mrs. Marshall?
"Well, they are the pieces to six different three dimensional wooden puzzles all mixed up together. I think it would take a real puzzle genius to put them back together again."
"A genius?", my student asked in a wondering tone. "I don't know any geniuses except Brainy Smurff."
"Who's Brainy Smurff?"
"Who's Brainy Smurff? You mean you don't know who Brainy Smurff is?"
Humbled, I shook my head no.
"He's the smartest Smurff there is."
"Oh, so he could put them back together again."
Why didn't I think of that?