My feet are quite flat on the bottom of them.

"Much better than the days when I was flat on my back."

"How would you like to be flat on your back again?"

I can remember it was very flat on the first few days.

He'll be flat on his back for at least a month.

And found herself flat on her back under him again.

Your feet should be flat on the floor, about 12 in.

He lay flat on his back like a dead man.

He was flat on his back and at first I thought heart attack.

Everyone else in the restaurant was flat on the floor.