Frisk is acclimated to extremely loud, enthusiastic voices at this point. Hell, they probably had a subconscious preference for people who have them at this point. So rather than be surprised by Ganeshan, they turn around and give him a big ol' smile. "Yeah. Heck, I think there's, like, two Santa Clauses back in my world. One of which may be a myth spawned by the real one, but who even knows at this point." They pause. "Maybe Santa Claus is kind of a universal constant, like the eidolons? That... would explain a lot, actually."