Answer:
What has a bell but isn't a church. Is full of air but is not a balloon?
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
I can be short and sometimes hot. When displayed, I rarely impress.
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain. Doing no harm, and feeling no pain.
Above all things have I been placed Thus have I, a man disgraced. I describe sunlight or lock But after all, I'm just a rock
Describes a mysterious region and a stylish pair of shorts.