Poor Posture (Noun) The incorrect position of the limbs or carriage of the body as a whole.

Megan! Sit up. That's terrible posture. When you slump down like that, your own muscles are literally pulling you down. A slumped posture not only harms your arm and shoulder muscles, but your neck, jaw, and throat muscles. Poor posture may cause fatigue, muscular strain, compression of blood vessels and pain. Nobody wants that for you, Megan. Sit up straight and mind your manners.

Oh, and put on a shirt.Your mother let you walk out of the house like that?