Show you were thinking

The teacher told the students that they were going to play a game.
"I've got something behind my back and I'm going to describe it and you guess what it is," she said.
"I'm holding something round and red. Can someone guess?"
"An apple" little Herbie said.
"No," said the teacher, "but it shows you were thinking. Its a cherry. Now I am holding something round and orange. Can you tell me what it is"
"An orange?" little Herbie said.
"No," said the teacher, "but it shows you were thinking . Its a peach."
Herbie raised his hand. "Teacher, can I play the game too?"
The teacher said yes, and Herbie went to the back of the room, faced the rear and said, " Teacher, I'm holding something about two inches long and with a red tip"
The teacher said "Herbie!"
"No," said little Herbie, "but is shows you were thinking. It's a match."