So use this pickup line. You'll either completely creep someone out or walk away with a picture of someone's face smushed against some glass.
Which wouldn't be a bad thing if you were the guy that made a photo of his dad by making it one dot at a time over a crazy amount of hours using over a million dots. He might use it as his next source material.
If that doesn't charm 'em, there's always this sure-fire line: