The Rusty Old Schwinn

The Red Ryder wagon sat there in the yard
By the sandbox, all ready to go.
And the Big-Wheel trike was there by the tree
Where Johnny left it a moment ago.

But the rusty Schwinn bicycle lay on its side
In the grass, like its will had expired.
Why was it not upright, ready to go?
Why, the poor thing was simply two-tired!