Q&A

The teacher is asking the kids:
"What has 4 legs, brown and lives in the forest?"
"Its a Bear." scream the kids.
"Good guess, but it could be a deer too."
Then she continues:
"What's in the grass that is green and jumps?"
"A frog, a frog...” scream the kids.
"Good guess, but it could be a grasshopper too."
Then little Johnny jumps up and asks the teacher:
"What is the thing, that when you put it into your mouth is big and hard and when you take it out is small and soft."
The teacher slaps him in the face, but he continues"
"Good guess, but it could be a bubblegum too..."