That wave of the hand meant he'd won. For now. How long it was last was another matter entirely. About a minute, Scott figured. Probably better make the most of his moment of peace, then.
Scott watched as it sank in to Stiles that he really was going to hold out on telling him anything about tonight. It was actually an amusing sight and when he finally spoke, Scott gave a small smirk back, "well it's good to know you trust me at least," even if he was currently slightly irritated by his silence. He could take that.
"So is this your way of telling me I look good tonight?" Scott asked with a low chuckle, trying to play it off as though it was just another random Stiles encounter, when he felt like it was anything but. He'd almost been willing to postpone their arrangements for a little while, but Stiles finally headed towards his closet. "Bring a change of clothes too," Scott told him and gave him an enigmatic smile, "just jeans and stuff'll do and no, I'm not telling you why."