Michael tells Erin to change his dinner reservations from four people to two, and clears her to put the candy on her desk. "Thanks for asking," he adds. Erin tells Pam they're good, and Pam brings it up, wondering what's going on there. Don't expect to find out tonight.
Pam comes into Jim's office, they exchange a dorky "Frank and Beans!" and then Pam wants to give Michael his gift. Jim tries to put it off, but Pam's insistent. Jim reluctantly follows her out, but not before noticing the feedback noise coming from his duck decoy. He picks it up, sees the baby monitor taped inside, rolls his eyes, puts it down.
In Michael's office, he opens the bottle of rum shaped like a parrot as Erin stick her head into say his reservations are changed. Pam picks up on the fact that Michael has a date, and sweats him a little before Jim calls her off. He tries to say he doesn't deserve the gift. "Just take the parrot," Jim bosses. He and Pam are about to leave, but Michael keeps talking, opening the door to Pam asking more questions, until Michael says the person is the mother of not just a friend, but a coworker. Jim gets more and more bleak-faced as Pam's face goes from excited about gossip to horrified. The stomps out, slamming the door behind her and screaming, "No! No! AAAAAAGGH!"
Michael THs, "That could have gone one of two ways, but I never expected her to get upset." What were the other two ways?
She's spent the whole ad break screaming out in the parking lot, looks like. Dwight comes in to Michael's office, offering to help him out by giving him the chills, grade-school style. Michael tells Dwight about Pam's mom, and Dwight, after the initial surprise, expresses annoyance at not knowing that Michael's into moms. "I could have introduced you to mine," he grumps.
Pam's now screaming at her mom over her cell phone, and hangs up on her when Jim comes out with her coat, a cup of coffee, and the news about the listening device in the duck Dwight gave him. "If I play it right, I think I can get him to play out the plot of National Treasure." Pam is in no mood. "Your mother is sleeping with Michael Scott," she says, stomping off yet again. She's really getting her stomp on this episode.
Back upstairs, Jim calls Andy into his office. After a brief talking-head shot where he doesn't so much talk as hold up a sign reading, "DWIGHT PICKED THE WRONG DAY TO PUT A WOODEN MALLARD IN MY OFFICE," Jim asks Andy for advice, and plays some loud opera that not only overwhelms Dwight's bug, but floods the whole office. Creed is moved to tears. Dwight can't hear a word as Jim tells Andy he was thinking of getting this opera for Dwight's birthday. Andy shoots down the idea, and when he returns the bullpen and Dwight asks him what went on, the only answer he gets is, "Trust me, it would only make you mad." Jim waves unsmilingly at Dwight from his doorway.