A man and his son were talking about sex. 

The son asked his father, "Dad, what does a pussy look like?"

The dad asked him, "Before or after sex?"

"Ummm, before sex," the kid replied.

The dad said, "Have you ever seen a beautiful red rose with soft red
petals?"

"Yeah," said the son. "Well, what about after sex?"

His dad replied, "Have you ever seen a bulldog eat mayonnaise?"