It's exercise class time, and they're doing crunches. The instructor talks about the sit-ups he used to do in 115-degree weather in the special forces. Gaby's not crunching because she's so tired she's "puking air." The instructor notices her, and instead of going back to work, she stops to tell him this is all a bit much, and she would like a break soon. He tells her to shut the hell up and get back to crunching. Then he punishes everyone by turning their two-mile run into four miles, blaming Edie for being stupid enough to bring Gaby.
On Wisteria, Lee's making googly eyes at Katherine when Susan walks up. Lee insists Susan look at Katherine's beautiful pearls, even though Katherine tells him not to make a fuss. Susan says they're "stunning," and then Katherine leaves to go prep for a bar mitzvah. After she leaves, Lee tells Susan how much of a keeper Mike is for buying Katherine those pearls. Then he realizes that Susan didn't keep Mike, so maybe he shouldn't have said that. [See? Ugly! - Z]
Lynette shows up at Bree's work (Katherine's not there yet, strangely) to tell her about a thank-you dinner they have planned for her at Scavo's, for just friends and family. Bree thinks that sounds nice, but she quickly turns it into something more than a private party: a local launch for her book. She condescendingly tells Lynette that if she does this at Scavo's, she'll "finally fill the place." As she's doing this, she actually hands Lynette her jacket and then asks her to hang it in the back of the car. It's a bit heavy-handed to have Bree treating Lynette like her hired help all of a sudden, but we get the point: rich friend, poor friend. Bree wants this dinner to be an opportunity for Lynette, turning one of her "dismal" Thursday night seatings into "a real event."
Mary Alice tells us how mad it drives Susan to see her child's tuition around Katherine's neck. She quickly decides how to get it back. She calls Katherine and asks her if she could run across the street and make sure Susan locked her door. Katherine obliges and, while she's out, Susan breaks in. She's looking through everything for the pearls, but can't find them. Katherine, of course, gets back quickly (who didn't see that coming?), so Susan hides under the bed. Katherine comes in and removes her pearls and clothes before hopping in the shower. Susan tries to crawl out from under the bed, but her jeans catch on something, and it makes enough noise that Katherine thinks Mike's there. Susan gets out from under the bed right as Katherine comes out with her towel open, ready for Mike. Susan grabs the pearls and runs out of the house. Katherine chases her in her towel, asking for her pearls. Susan tells her "Pearls or towels," saying she's been naked on this street and would like to take the heat off that story. She ends up telling Katherine that Mike told her he couldn't afford to pay for MJ's private school, and now she knows why. Susan's snotty, but Katherine is shocked that Mike wouldn't pay for MJ's school. Just then, a boy from the neighborhood wrecks his bike while gawking at Katherine in her towel, so the ladies break up with plans to discuss it later.