Lindsay Lohan nibbles on Samantha Romson in public

Lindsay Lohan is back in LA after partying it up in Las Vegas with her girlfriend Samantha Ronson. During an outing to a convenience store, Lindsay sexily nibbles on Sam's shoulder and not only does Samantha look shocked by it, she looks hurt by it. If Lindsay is willing to do that in public with all her paparazzi frienemies watching, I wonder what the girl does behind close doors. By the looks of it, either Lindsay is completely comfortable with her sexuality now or she just wants to piss her dad off. You be the judge.