Quote from Lily in The Scorpion and the Toad
Marshall: And the pizza there. Worst pizza ever! I'm so glad to be back in New York. Marshall: Yeah. Lily: Listen, if there is anything I can do to even begin to make things up to you. Marshall: Actually, there's maybe something you can do for me. But you can never ever ask me why. [cut to MacLaren's, where Barney is still with the twins:] Barney: So then, I was promoted to assistant ménage-er. Manager. Why do I keep doing that? [Lily arrives] Lily? Lily: You gave me chlamydia, you jerk! [throws a drink at Barney] Barney: So, where was I? Ah yes. Assistant ménage-er. I did it again. I can't believe it! [Lily returns wearing a hat] Lily: You gave my twin sister chlamydia, you slime! [throws another drink] Barney: Wait, wait, I know magic. Well played, Eriksen. Well played.