Inside the house, Lip and Karen are about to fuck downstairs when she suddenly is like, "What is the nature of our relationship?" There's a whole game of brinksmanship going on here on which they've been zeroing in for a while, where Lip wants more but can't want more and Karen's like entire thing is about never wanting more. So will Lip still like her if she wants to be his girlfriend? And will Karen still likes him if he proves that he's a pussy by liking her? I mean, props to Karen for bringing it up but they're sort in sex Viet Nam right now with no exit strategy. So they agree, both disappointed, that their status is: "Friends who like to do this," and it's sad but can't be helped.
Liam and Fiona finally make it home and she yells at Lip for fucking on the couch, and he points out that she's the one who did it last night on the stairs. "Hallway!" she yells, taking the groceries to the kitchen, and then informs them that Kev and V are bringing Ethel and meat sauce ("Is that a euphemism?") for a big all-family spaghetti dinner. Carl comes home screaming about paintball, face all jacked up, and then Kev comes in crowing about his "daughter." Aww. Veronica corrects him, stone-faced, and Karen just can't get enough of Ethel, because Karen loves trainwrecks. Her eyes go wide and Ethel curtsies like a lunatic and Karen just shakes her head. "Right! Because it's 18th-century England!"
Everybody's minds are blown by the fact of Ethel, and then Frank and Debbie show up screaming and bouncing off the walls -- "Oh my God, I am so wired!" Debbie screams -- and after a few minutes of talking about the Frank situation, Lip goes hard and sad and black. He knows what it means, it's happened before. "We gotta help Daddy stay busy and keep his mind off of drinking!" Debbie screams, because that is like everything she loves at once.
Frank gives a speech and then the whole family plays this awesome raucous game that's like an obstacle course through the house, up the stairs and over the couch, it's awesome, they jump over brooms and at one point you have to spin Ethel around like a turnstile, it's fantastic. Happiest thing maybe ever on this show. Lip's getting more and more morose, like everybody else has amnesia about how this ends, but even Fiona sort of gives in. Frank runs over to the piano and starts playing, everybody gawps, then he starts singing "I Will Survive," and everybody joins in, happy little family, and Lip is just about to punch himself in the dick, so they finally take off.