haha that just depends on where I'm looking when the girl crosses my line of vision. But if I'm looking at her from the front then hair,eyes, face, boobs. From the back hair and butt :). Shortly after the initial once over I notice how she carries herself. Like if she seems confident, laid back, fun etc.
her eyes, her smile, her style of clothing and yes her butt. sorry to be so blunt but its true, we do like to check out the butt. but for me its definitely the eyes. girls with gorgeous eyes are intimidating but intriguing at the same time.