A Bigger Word

Once the father wrote out a word and taught it to his small son. The next day the son was hanging around when the father was mopping the table. With a corner of his wet mop the father traced over the word on the table and asked the son to read it.

The son did not know how.

"Why, this is the same word I taught you yesterday," the father said.

"It's grown much bigger overnight," the son answered wide-eyed.