Class of 3rd graders

[funmonger]

A teacher asks her class of 3rd graders to use the word "fascinate" in a sentence. She calls on a small boy sitting in the front row.
"I saw an airshow. And it was very fascinating."
"Good, but I wanted you to use the word 'fascinate,' not 'fascinating.'" She then calls on a girl sitting off to the left.
"I saw some monkeys. They were very fascinating."
"Good, but I wanted you to use the world 'fascinate,' not 'fascinating.'" Billy's hand shoots up into the air and she calls on him.
"Teacher, teacher! I got one!"
"Go ahead, Billy."
"My sister's shirt has ten buttons, but her tits are so big she can only fascinate."