Little Johnny's at it again

The teacher asked the class to use the word 'fascinate' in a sentence.
   
  Molly put up her hand and said, ' My family went to my granddad's farm, and we all saw his pet sheep It was fascinating.'
   
  The teacher said, 'That was good, but I wanted you to use the word 'fascinate, not fascinating'.
   
  Sally raised her hand. She said, 'My family went to see Rock City and I was 'fascinated.' The teacher said, 'Well, that was good Sally, but I wanted you to use the word 'fascinate.'

  Little Johnny raised his hand. The teacher hesitated because she had been burned by Little Johnny before.

  She finally decided there was no way he could damage the word 'fascinate', so she called on him.

  Johnny said, 'My aunt Gina has a sweater with ten buttons, but her tits are so big she can only fasten eight.' 

  The teacher sat down and cried.