The perfect pickup line

A marine is sitting at the bar and a striking redhead sits down next to him. He gives her a cursory look, smiles and continues to nurse his beer. Five minutes later he glances at his watch and the redhead – wondering why she had not been hit upon – asked, “Are you waiting for your girlfriend!” “No,” he responded. “This is not merely a watch. It is a sensory pickup and I can tell things about other people, like …. well, the fact that you’re not wearing panties!” The redhead smiled and said, “Well, you had best get it fixed because I am wearing panties!” The marine looked at his watch and replied, “Hmmmm! It seems to be running about an hour fast!”