Barney: An engagement ring? No. No, no, no, no, no, no. Ted, you cannot do this to me. No. No, no, no!
Ted: That's what she said.
[flashback to the restaurant:]
Robin: No. No, no, no, no, no. Ted, you cannot do this to me. No. No, no, no.
Ted: What are you talking about?
Robin: This. This is what I'm talking about. What is this doing in my champagne? Oh, God, listen... I just got to get out of here.
Ted: That's not mine.
Robin: What?
Ted: That's not mine.