“Yeah, me either, but I'm not sure what else we're supposed to do?” Cheekiness aside, he is being serious about getting used to the loop. So far, he's remembered three major things: touching an urn and being attacked by some angry spirit, meeting a dead(???) guy, and seeing his sister. Those are just the loops he can remember right now, so who knows how many there's actually been?

Klaus hums thoughtfully, contemplating which one he'd experienced last. “I remember my sister,” he admits. “Buuut not much else yet? Might have to see if there's a way to shake loose some memories.”