Theme Song!

We're still at the apartment and Lily is positively gleeful at pronouncing Barney and Robin, "boyfriend and girlfriend." Barney and Robin protest too much, which Lily doesn't get, since they admit they've been together all summer. Apparently they kept trying to have "the talk," but kept putting it off to have sex. In the flashbacks, we see Robin broach the subject, and Barney pull out his old, "Or... or!" technique. They finally decide "the talk" sucks and that they hate it. Barney explains, "You have to, like, talk, and be all..." He adopts a dopey voice. "I don't know. It's not that I don't like you. It's just that I haven't had a girlfriend in a really long time. I hope it doesn't make you mad." Back in his regular voice, he adds, "Blech. Who needs it?" Lily replies, "You needs it." She's as serious as Ms. Hannigan's post-partum cleavage (I mean gosh, look at those) when she warns them that they can't keep hooking up without trying to figure out what they mean to each other. They knew Lily would say all that, which is exactly why they kept their this-is-in-no-way-a-relationship a secret all summer. Barney adds, "Well that, and the fact that elaborate lies really turn us on." They go to make out, but Lily stops them and in her best (and worst) busy-body manner, orders them to have "the talk" and define their relationship. Barney's ready with another, "Or... or," and we cut to...