Erin's doing some impressions at the party and getting laughs, but Andy's worried about how many drinks she's had. "A thousand," she chirps. Andy suggests a break, and she coldly suggests he mind his own business. "Just kidding!" she grins before scampering off.
Dwight brings the party to a screeching halt by calling everyone's attention to the injury he just sustained as a result of "someone" stashing a porcupine in his desk drawer. Yep, that's a real porcupine. Jim wonders out loud who has access to a porcupine. Dwight suggests that someone is trying to set him up. Toby suddenly hijacks the entire episode with a digression about his latest mystery novel featuring Chad Flenderman. Jim gets things back on track by pretending to call Animal Control and make like he's relaying questions to Dwight from the operator: "Where you quilled? And what's its name?" Dwight's answers are yes, and Henrietta. So is this subplot over then?
Erin takes a break from dancing to group-hug Andy and Jessica inappropriately before going back for "another reverse-spit." "That's the girl you dated?" Jessica asks Andy uncertainly. Andy says she's not always like that, and excuses himself to see if he can get Erin something to eat. While Jessica watches through the glass wall, Erin shares her Christmas wish: "I wish Jessica was dead." Andy tries to give her an out, but Erin doesn't want one. "I wish she was in a graveyard! Under the ground! With worms coming out of her mouth!" Andy takes offense, and the other partiers start to take notice as Andy yells at her to get over it and take her wish back. Erin refuses, and says Andy promised he would make their wishes come true in an e-mail. "So which one are you? A murderer or a liar?" Andy just walks away. How is that a hard question?
Phyllis tells Val she looks like a princess and not to listen to what anyone's saying. Again, not helping. Jim wanders up to a cluster of revelers that includes Andy and shows them a photo of Cece that's been vandalized to make her look even more like the devil. Oscar and Phyllis get all upset on Jim's behalf, and Andy goes so far as to say this is enough to get Dwight fired. Jim backpedals so quickly he doesn't even have time to think about the time Dwight didn't get fired for discharging a handgun in the office. "So maybe it was me who did it by accident," he says, backing away. "I'll figure it out. I'll get to the bottom of it. Merry merry!"