Larissa enters the party carried by four men like it was her Super Sweet Sixteen, then immediately ditches her moment to hang out with her high school friends. Bennett leaves, and Carrie notes that he is gorgeous. Larissa says he's a triple threat, "gorgeous, talented, and... something else." G-g-g-GAY, but we want to save the surprise, don't we? Larissa applauds their "ironic" costumes, and gossips about marriages of convenience and alludes to Camilla Parker-Bowles. Then, Larissa gives them some ecstasy. Now things can get interesting.
Walt takes it, Carrie throws it on the floor. They notice that the pill seems to be making Larissa more happy (never mind that she is putting her hands all over someone's face and costume). Carrie regrets not taking hers, but I bet she could find another one real easy. Carrie wants to find Bennett again because she is only used to one person in her life being gay at a time.
Oh god, now we have to see what Mouse and Maggie are doing? They are going to Sebastian's party to spy for Carrie because they don't have interests independent of hers. Sebastian lets them in, obviously drunk, and tells them where all the alcohol is hidden.
Back at the party in the city, where people keep spray painting nothing onto graffiti that is already there, Bennett is just as much of an insufferable douche as you might have thought. He's philosophizing about graffiti and "the act of creation." Larissa, who is rolling like the river, invites Carrie to dance with her and Carrie acts bitchy and dumb.
"Why are you sweaty? Have you been dancing?" Carrie asks Larissa, at her party filled with illicit substances. Then Carrie tosses Larissa aside, as always, to talk to Bennett, who asks Carrie to tell him more about herself. I am so annoyed with Carrie. This boring conversation is interrupted by Larissa pecking at the wall, then falling down because, you know, drugs.
Carrie is the only person fully clothed enough to help Larissa, apparently, so she asks Bennett to keep an eye on Walt, who is high and watching the fake spray painters while she gets Larissa a cup of water. Bennett, misleadingly, says he will miss Carrie. On their way to an elusive cup of water, Larissa mentions that she took two tabs of ecstasy, had a little champagne, and washed it all down with "a little piece of paper." Carrie's guesses ("tissue paper? Construction paper?") are all wrong and annoying. It was acid, Larissa tells Carrie and the dullest of us at home.