Lily: Barney, what was on that tape?
Barney: Too bad you'll never find out.
Lily: Oh, damn it! If only I'd given you a fake tape and hidden the real tape in my purse. Oh, wait. That's exactly what I did.
Barney: What?!
Marshall: Drink!
Lily: Yeah, you were acting so weird about it, I gave you Ted's graduation tape instead. So, should we pop it in?