When I Grow Up, When I Was Young

When a kindergartner says he wants to be a radiologist he sparks an interesting conversation between the kindergartners and first graders in art class.

It all began when the kindergartners joined the first graders for art class.
A kindergartner said, "When I grow up I want to be a radiologist."
To which a first grader replied, "Well, when I was young I wondered what I would be when I grew up."
The other students joined in, and the conversation zigged and zagged from kindergartner to first grader to kindergartner to first grader.
In the end, it looked something like this . . . .