Dipper pulls out a pen and notepad and starts jotting things down. "Yog-Sothoth... Shub-nig-- uh," he glances back up at the mysterious demon. "How many g's is that?"

It doesn't really matter, probably, but focusing on the details can help prepare him to process the absolutely terrifying bigger picture. Someone is trying to summon an elder god in his city. And it's entirely up to Dipper to stop it.