[He shrugs a little.]

I think it depends on what it is? A lot of times, people will recognize a part of what's going on and announce that it's theirs--like in this case, though if Dipper hadn't said something I might have assumed the roleplay-ey stuff came from Warlocks and Warriors, because the game mechanics are so similar. And them sometimes we wind up someplace that's kind of obviously from someone's world. For example, if we woke up in Gotham, I think someone would be looking pretty hard at you and me.