Officer Barbrady is put into the boys' class to learn to read so that he can solve a case. He starts to enjoy school life a little too much; swinging on the swingset while singing this song. He is promptly interrupted by Mayor McDaniels who forces him to learn reading more quickly to solve the case.
Swingset, swingset, up and down I go
"Whoosh!" goes the willy-wind, flowing through my toes
Swingset, swingset, up and down I go...