If anything did happen to Draco, Harry could be assured that it was something that would happen to any other new customer who walked into the store. George had kept up the tradition even now, and Harry was grateful for that, that he could still joke without his twin. "Really, Draco," Harry was laughing just at the expression and attitude that came over the Malfoy heir. "You'd think we were the Slytherins and you the Gryffindor the way that you're acting."
Harry nudged Draco playfully, closer to some of the safer toys in the shop and rolled his eyes. "The twins gave as hard as they knew someone could take," Harry stated quietly. "Lighten up a bit or I guarantee that George will do something to try to make you lighten up." He rolled his eyes, then made a beeline for his friend and began casual conversation with George. "Would you guess that Draco's actually frightened that you'll do something horrible to him?" he said the last loudly enough for Draco to overhear, because he was sure that he was listening. Honestly, what did Draco expect? Whatever they did here was friendly.
Besides, Harry was letting it be known that he was with Draco, so if anything bad happened to him, they'd know that they had Harry to answer to. He wondered if Draco would see through his motion or not, or if he was too bent up on what was about him to think twice as to what Harry was doing.