A corn snake was taking a leisurely stroll through the garden last night.
It was content to take its time, until I started pestering it.

When it moved fast, it turned over onto its back and sped along with its
shiny gold stomach upward. When it stopped, it went back right side up.
I watched it do that several times.

It was surprising to me that it would do that. Has anyone else observed
a snake doing that?