"At" Story extended

Original Story by Roads

There once was a gnat,

who got into a spat,

with a thermostat

and that's that!

Then along came a rat.

The rat ate the gnat,

and the gnat ate the rat.

Then the thermostat ate the Coliseum. (Additional part by AgentP below.)

Then the coliseum ate the gnat that ate the rat

That swung a baseball bat

On a mat

And then here comes a guy with a hat!