Smash cut to Will's living room, where Will's putting three of the other four gentlemen from the teachers' lounge through their paces, as set to Montell Jordan's timeless classic. Will's voice over admits, "Two weeks ago, I would have agreed that four grown men rehearsing a cappella hip-hop in my living room was embarrassing, but bustin' out some white-hot New Jack Swing? I'll tell ya, I never felt so confident." AAAAAUAUAUAUUUUUAUUUGH. As the song continues beneath, we hear the guys' various suggestions for the new middle-aged boy band's name: Henri suggests "Crescendudes" and Ken quite expectedly opts for "Testostertones," but it's Howard's apparently divinely inspired "Acafellas" that ends up both the winner and the episode's title. Just then, Sandy Ryerson arrives at Will's front door, having first had to skitter back home to change into his frilly '70s tuxedoed best for the evening's festivities. Will: "Sandy? We voted. When you're in the group, it's creepy." And with yet another of Sandy Ryerson's dreams so brutally crushed, Will slams the door in Sandy's face to hurl himself back into the number, and the montage of mad crazy middle aged dance moves indicates all is going well until Terri screams out of their bedroom with, "WILL?! If I don't get some sleep, I could miscarry!" Hee hee hee! Jessalyn Gilsig can do no wrong.

And after Will's dutifully pushed his fellow boy banders out into the building's hallway, we next find him shirtless, tossing Terri up against the bedroom door to snack on her neck as his voice over notes, "Being in a boy band did wonders for our love life." Flashes of the Schuesters rolling around in bed interlace with scenes of Terri frustratedly eyeing negative pregnancy test pee stick after negative pregnancy test pee stick as Will continues, "It was amazing! I mean, we started doin' it once a week. It was like she was trying to make a twin!"

Sometime later, Rachel arrives in the quiet rehearsal room to announce, "He's not coming." "What happened?" Finn asks, and for the answer we're wiped into another mere-seconds-ago flashback, this to Will's Spanish classroom, where Rachel attempts to give Mr. Schue a plate of her famous sugar cookies by way of apologizing for her earlier derogatory commentary regarding his dancing abilities. You can tell she's apologizing because the star-shaped cookies each contain a letter (plus appropriate punctuation) that together spell out "I'M SORRY." Will's pleasantly dismissive, for as he notes to Rachel, without her criticisms, he'd "never have had the guts to start Acafellas," and now that he has, he just doesn't have the time to deal with the Glee Club's every last need anymore. One quick wipe back into the present, and Finn's yelling, "Of course he doesn't want anything to do with us after you kicked him in the nads!" Santana Lopez cuts through the noise to remind everyone that the goal is to win, and now that Mr. Schuester's given them permission, they can go ahead and steal Dakota Stanley away from Vocal Adrenaline. "But he doesn't want us to!" Finn protests. "He just doesn't have the confidence to coach us anymore!" AAAAAUAUAUAUUUUUAUUUGH. He goes on to blame Rachel for destroying Mr. Schue before Quinn rises from her pretty perch and calls for a vote on The Best Show Choir Choreographer In The Midwest. All raise their hands -- even meek Artie -- with the obvious exception of Finn, and a rather martial-sounding drum corps beat marches us out into...