When someone's profile pictures on facebook are mostly half naked. (Mainly because they have nothing else to show for) The "yourself" part is because the personOBVIOUSLY chose it as his/ her profile pic. Hence a SELF made decision and not a random tag from a friend.
Nelson: "Take a picture of me so I can add it to my facebook profile pic album."
Travis: "Dude... don't sexpose yourself. Have some dignity. Keep something for later! WE GET IT! YOU ARE HOT!"