Stoop

Stoop - a way of standing or walking with your head and shoulders bent downwards and forwards.

Example - "I saw a guy on a stoop frenching his cat!"

Image - http://upload.wikimedia.org/wikipedia/commons/thumb/d/de/Sir_William_Richard_Gowers_Parkinson_Disease_sketch_1886_2.svg/512px-Sir_William_Richard_Gowers_Parkinson_Disease_sketch_1886_2.svg.png