Mary raises her hand and exclaims, "Me me me!"

The teacher says, "Go ahead, what's the sentence?

Mary replies, "The sky is definitely blue."

"That's good, Mary," says the teacher, "but the sky can also be gray or white."

Sam raises his hand and states, "Grass is definitely green."

The teacher says, "That's good, Sam, but grass can be brown, too."

Little Johnny raises his hand and asks, "Do farts have lumps in them?"

The teacher says, "No Johnny, why do you ask that?"

Little Johnny replies, "Well, I definitely sh*t my pants."