Emma and Scott had free rein with the toys.
"What," Scott asked his father one evening, "is a wabe, dad?"
"Wave?"
He hesitated. "I … don't think so. Isn't wabe right?"
"Wab is Scot for web. That it?"
"I don't see how," Scott muttered, and wandered off, scowling, to amuse himself with the abacus. He was able to handle it quite deftly now. But, with the instinct of children for avoiding interruptions, he and Emma usually played with the toys in private. Not obviously, of course but the more intricate experiments were never performed under the eye of an adult.

Mimsy Were The Borogoves (1943)