When a person leans over wearing blue jeans, and part of their butt crack is exposed. Does not apply to a full showing of the butt, but it is at least partially covered. Can be attractive in some cases, but usually not. Like a solar eclipse, looking for more than a second can burn your eyes.
She bent over pick up a box, and all I could see was her denim eclipse.
by Monty Basilton IV February 28, 2012