Future Ted: [v.o.] Kids, Einstein was right. Time moves at different speeds. To Barney, the previous night raced by in a blur. But then, all of a sudden, time stopped.
Robin: This might be the worst thing I've ever done.
Barney: Hey, now, you weren't at the top of your game, but it was still pretty...
Robin: Oh, my God! I just cheated on Kevin. He is the nicest guy ever. I'm a terrible person.
Barney: It's okay. We both cheated. What's that saying about two wrongs making a right?
Robin: "Two wrongs don't make a right"?
Barney: No, that's not it.