It sits flat on the ground with the bottom open to the earth.

VOA: special.2010.07.13

Deep Flight Aviator's wings, viewed in cross section, look exactly like an airplane's, upside-down: They're curved on the bottom, flat on top.

FORBES: Cruising Altitude: Minus 400 Feet

The anodized aluminum chassis curves around to cradle the LCD on the left and right, but it's flat on the top and bottom, with edges exhibiting the subtle chamfering that appears to be all the rage these days.

ENGADGET: iPod nano review (2012)

Cristal is one of the oddest looking bottles on the market with its clear bottle, flat bottom and cellophane wrapping.

FORBES: From Tsars to Rap Stars,The Story Behind Cristal Champagne