How do we know this? Because they didn't know what Naked and Afraid is. How do you NOT know about that show? No, of course we've never actually watched it, but everyone knows about Naked and Afraid.
Since their reaction when they found out about it was exactly the same as ours (even if ours was over a year ago), we'll give them a pass on that one. Seriously, Mary-Kate isn't sure if she should be totally repulsed or if she wants to grab her phone and Google it as soon as she steps off stage. Maybe a little bit of both?
The twins found out about the show during a little game where they were asked questions and either had to throw themselves or the other sister under the bus. They totally cheated, though, so it wasn't as fun as we thought it was going to be.
Basically, what we learned about the Olsen twins from this appearance is that they clearly aren't up on their current TV shows, they don't know as much about each other as we would have thought (so much for that whole twin thing) AND they can't even tell who is who in these Full House throwback photos (video below).
Somehow all of that is endearing because we kinda thought they were these superhuman moguls who knew everything about everything and this showed that they're actually just like regular 27-year-olds (except for the insanely rich and famous part).
But seriously, guys, you need to at least know about the current lineup of weird TV shows like Naked and Afraid, My Strange Addiction, Sex Sent Me to the ER...we could totally keep going.