Katherine Avery and Weber are holding hands in the x-ray room, and Katherine reminds Weber that she doesn't want Jackson to know about their "continued adventures." Bailey interrupts their conversation and asks to get in on the testicular reduction surgery, but Weber says no, because he wants Kepner on board. Bailey shoots him one of her trademark infringing "Whatchu talkin' 'bout, Weber?" looks, but Weber won't back down. He's taken Kepner under his wing and wants her unlicensed hands in on the surgery. He hopes Bailey understands. She doesn't.
Back in the training room, Smash Williams finds yet another kind, understanding, and strong mentor in the form of Derek Shepherd. When Smash struggles to find the fake vein while he's attempting to put in a central line in the dummy torso, Shepherd yells, "Clear Eyes, Full Heart, Can't Lose!" and Smash makes the touchdown. In related news, I miss Friday Night Lights.
Since Bailey can't get in on Weber's and Avery's surgery, she tries to steal Meredith's incredibly complex tumor surgery. Meredith isn't having it at all, though. Over in awkward conversation land, Katherine Avery is talking Kepner through the male anatomy. When Kepner balks at the site of testicles the size of basketballs, Katherine tells her to relax and suggests that in her professional opinion, Kepner needs to get laid and prep for next year's medical boards, preferably at the same time. Luckily she knows just the gynecologist to do it. She promises to give Kepner his number, but not before extolling the virtues of a great sex life using some powerful flower blossoming imagery that makes Kepner blanch and maybe gag a little thinking about Weber and her sex friend's mom getting it on. Speaking of the other Avery, Weber invites Jackson to scrub in on the nut surgery because they need a plastics guy to make a "skin flap." I assume that's the technical term? Jackson is cool with it, even though it's with his mom and Weber.
Back in the prosthetics lab, Arizona is unhappily being fitted for her fake leg. Callie comes in to see if she's done and Arizona takes out all her aggravation and frustration and anger on her, full on yelling at her for not checking her voicemail. Callie quickly retreats. Meanwhile, Meredith is on the phone with Cristina who is still in Minnesota (we know this because it's snowing outside her window) telling her about the tumor she's about to remove. Meredith doesn't want to tell Derek about it, because she doesn't want to rub her awesome surgery in his face both because it's wildly unsanitary but also because he's being a good sport about teaching. Also because secrets are always good for keeping the magic alive in a marriage. Anyway, something Meredith says gets Cristina staring off into the middle distance Dr. House-style and having a realization about something. She hangs up quickly, freeing Meredith to lie to Derek when he asks her about breaking the news to her intern that she was wrong about the tumor.