Little Johnny goes to school
It was Friday morning, and that meant it was time for an activity that the teacher called 'add to the picture'. The teacher would call students to the chalkboard one at a time. The first student would draw an object on the chalkboard, and each following student would add something to the picture to make it a new picture.
The teacher called on James to start things off.

James returned to his seat.
The teacher called on Ernie
next.

Ernie returned to his
seat.
Now it was Suzy's
turn.
Suzy returned to her
seat.
Next, the teacher called Jerry to
the board.
Jerry returned to his
seat.
Kim was called to the
board.
Kim returned to her
seat.
About this time, little Johnny
began waving his arm hysterically. Little Johnny was well known for being
dirty-minded, so the teacher was reluctant to call on him for anything. But as
the teacher looked at the picture on the chalkboard, she thought that there was
no way that little Johnny could possibly do anything to make this picture dirty.
So she called on little Johnny, and he ran to the
chalkboard.

Little Johnny had done it
again.