Suzie and Johnny

[Deep Diver]

Teacher asks a question about Biology homework
What organ on the human body can expand seven times it's size?
Suzie jumps up and says, I know the answer, but I'm too embarrased to say.
Not detered little Johnny puts his hand up, and notwithstanding his normal replies the teacher gives him a go.
Johnny replied, your eye.
Well done the Teacher said
Suzie I'm very dissapointed in you.
Not only did you not do your homework , you have a dirty mind, and you are going to be very dissapointed later in life