"Little Johnny at the Grammar School" joke

One day, during a lesson on proper grammar, the
teacher asked for a show of hands for who could use the word
"beautiful" in the same sentence twice.
First, she called on little Suzie, who responded with,
"My father bought my mother a beautiful dress and she looked
beautiful in it."
"Very good, Suzie," replied the teacher. She then
called on little Michael.
"My mommy planned a beautiful banquet and it
turned out beautifully," he said. "Excellent, Michael!"
Then, the teacher called on little Johnny.
"Last night, at the dinner table, my sister told
my father that she was pregnant, and he said,' Beautiful,
fucking beautiful!'"