Luke's. Lorelai has shown up because it's 4 PM, which means they're already late since they are scheduled to speak at 4. So rude, all of these people. Okay, so it's the next day, I guess, or the day ended before Lane and Rory got together at the hair shop, which would have happened right after school, so how is it 4 now, but...never mind. Anyway, Luke takes off his apron and says he's ready to go, but Lorelai isn't letting Luke go dressed in grunge wear, and announces that he's going upstairs to change. I really think it's none of Lorelai's business what Luke wears to his PTA engagement. Luke says this is his power outfit as Lorelai pinches Luke and drags him upstairs, bribing Luke with a toy if he's a good boy.
Upstairs, Jess pulls his pants back on as Lorelai and Luke walk into the room. Jess sits with a book, asking what kind of toy Luke's getting. Luke tells Jess to go downstairs and help Cesar out. Jess says his education should come first. Lorelai finds some kind of Jimmy Buffett shirt inside Luke's closet. I can't believe she's just tearing through his closet anyway. Hey, remember when Lorelai bought Luke all of those nice suits? Couldn't she just tell him to wear one and not have to pretend she's never seen his closet before? Lorelai calls Luke a "BuffettHead," but everyone who's not me knows that it's called a "ParrotHead." She tells Luke to sing "Margaritaville." Luke says no, which prompts Jess to tease, "That attitude's gonna lose you that toy." Lorelai finds Luke a blue Oxford shirt. Luke runs to the bathroom to change in privacy, despite Lorelai's protests. She says she's already seen him shirtless at the lake and he's got nothing she hasn't seen before. Jess says that Luke's really let himself go recently. Lorelai tells Luke to lose the baseball cap, and Jess jokes that Luke runs the risk of losing his head if he does that. Lorelai says he'll be okay. Jess and Lorelai then spend some time making eyes toward the other side of the room. I didn't catch it the first two times, and it's not until Luke and she leave in a few seconds, when Lorelai tells Luke that Jess had a girl in the closet, that I put it all together. Because, see, that Probawhore must have a time/space portal in the back of the beauty shop to get from one place to another so damn quickly.