At school, Luke sneaks into a locked room within a larger room. Grace is close behind. It's a room full of animals in jars of formaldehyde and insects in boxes and whatnot. I guess it's a storage room. Grace, looking around in wonder: "Dude, it's like a pet cemetery in here." Luke chuckles: "Lischak gave me the key. Science student of the year does have its privileges." You mean, apart from shagging Lischak? Grace: "This is so the beginning of a Stephen King novel." Luke asks her where she was last night: "I IMed you, like, a thousand times." Grace explains, "Oh, my mom was in rare form. Doing her Judy Garland act. Lots of singing, lots of falling down. Me putting her in the shower." Wow. So she's a theatrical drunk. That always compounds the potential for embarrassment. Grace tries to sound casual -- indeed, it's interesting that, now that Luke knows, she's managed to get this comfortable talking about it -- but Luke looks serious: "Where was your dad?" Grace: "He works late so he doesn't have to deal. It's their little unspoken bargain: as long as she's sober at temple, runs her meetings, and has everybody snowed, she…" Luke looks troubled. Grace: "Don't look all simpy, I'm used to it." Luke suggests talking to somebody. Grace: "Why? I'm almost out of there." Luke says it's two more years: "That's fifteen percent of your life so far." Grace gets impatient: "The test is on Thursday. Let's cram." They sit down and Grace says, "Dark matter, black holes, lay it on me." Luke starts talking apathetically about black holes, and interrupts himself to say, "You know, you don't have to be embarrassed to talk to me about this." Grace resorts to Plan B: she kisses him. Frink: "Ooh, I saw tongue." Grace, as flirtatiously as possible: "How's that for gravitational pull?" Luke just looks worried. Frink: "He's thinking too much. Kid's not normal." Grace starts kissing him again. Luke stops fighting it.