Yawns are contagious, as was soon exemplified by the act of Sean clapping a hand over another one of his own before playfully jabbing Kitty a bit with his elbow. "Stop that. I'm barely awake already."
That said, he returned to the actual topic at hand. "Yeah, see, I'm still pretty much feeling like, you know, man on the moon? That's still some Wellsian stuff right there." A twitchy blink was the only sign that he seriously had to put a certain degree of effort into not letting 'stuff' come out as 'shit.' It was early and also he wasn't used to talking to people with whom he didn't already have a history of constant cursing but he vaguely recalled at some point being taught that vulgarity was not appropriate in the company of ladies or strangers? At least, wasn't something you did when you were trying to impress them and, let's not deny, it was pretty safe to say that he wanted to impress Kitty.
"But, uh," he went on over top of that thought, gaze sweeping off in Erik's general direction and then back to look at Kitty with a lopsided grin, "you don't know Erik." The tone of his statement came out similar to that of any teenaged boy actually expressing a very special level of respect for their parental figure. "Pretty sure if anybody could scare an alien, he could." Look, Sean didn't even care if Erik heard him say that. It was true. "But I guess how much we could do really kind of depends on what we'd be up against and maybe what the aliens would be expecting." Because there was a good chance, in Sean's mind, that the aliens were just as uncertain about what they had to contend with as anyone was on Earth.