I am useful until I hit the floor, then I’m everyone’s problem.

There was once an old movie about a brave little version of me. For anyone born after 1990, I'm what cooks toast with your coffee.

Whether facing the front or legs off to the side, it’s there to support - not needed to ride. Fastened with a cinch, no corset this is. Between beast and rider’s dance, a special one sits.

You can sit on one, often in a bar, maybe a hightop too; In times gone by, you'd sit on this, to make one, perhaps with a view. A doctor may ask for a sample, though taking a seat is not what they mean; I can be solid or runny, and tell them what your insides have seen.

The female has a round body often made of plastic, She is not able to nag and her support is fantastic. Her talent has it's ups and downs when in the right mood, Used when no one's around in the darkness of solitude. His body's also round and to get this riddle right, The male must be found, and at night he helps your sight.