Su definitely caught sight of his eyes flicking down to her mouth, and if she hadn't had thoughts of kissing him in her mind before, she did now. It might not have been the time to kiss, but even with his continuing to talk, she could feel herself starting to lean in a bit... except then she heard the sound of Dean's voice, and glanced up with a smile. Yep. Definitely not the time for kissing.
"You can go next if you want, Dean! We'll move out of the way so you don't hit us." Grinning, Su added, "It's a lot of fun!"