Marshall: Oh, come on, Barney, even you aren't still gonna be hitting on 22-year-olds when you're 80.
Barney: I accept that challenge.
Marshall: What challenge?
Barney: To prove to you that I will be exactly this awesome when I'm 80, I will hook up with a 22-year-old while in my old-man makeup.
Marshall: I didn't remotely challenge you to that. I mean, I definitely want to see it. But I didn't remotely challenge you to that.