"Thanks," Crichton says somewhat sheepishly, bumping his shoulder against Arthur's. "We'll go with that since I don't actually know how old I really am anymore."

His own lips curl into a wicked shape that will translate into his voice as well. "You know what is a tradition where I'm from? Birthday spankings. Dare you to try it." He doesn't actually think Arthur will, but it might be funny to watch his fluster if he thinks about it.