Dave Franco appeared on Conan earlier this week, and O'Brien wasn't shy about quizzing him on brother James Franco's PG-13 social-media behavior—like posting semi-naked selfies and nude portrait of Seth Rogen.

You'll be happy to know the younger Franco is as mystified as we are—though he's not that disturbed by James' social-media shenanigans. "Compared to some of the other weird things he's doing this kind of seems like a refined act," says the Neighbors actor.

He has a point.