During a normal day at school, Marco starts to randomly blurt out embarrassing things when Jackie is around. He eventually grows a second head called a Naysaya that reveals his secrets and insecurities whenever he tries to ask out Jackie.
A friendly visit to Tom reveals that he was the one to curse Marco with the Naysaya to prevent him from asking anyone out, which was done before the two became friends. Tom says that the only way to get rid of the Naysaya is to let it run its course and allow it to reveal everything about Marco.
Marco returns to Earth and tries to bribe the Naysaya to keep its mouth shut. It initially looks like the bribe was successful, but the Naysaya ends up speaking up again while Marco is talking to Jackie. Marco ultimately decides to resign himself to the fact that the Naysaya is going to reveal everything embarrassing about him, so he cuts out the middleman and tells Jackie himself. Jackie is unperturbed by Marco's faults and ends up going out with him to the movies.
- But for Me, It Was Tuesday: Tom casually mentions that he cursed Marco at some point after the Blood Moon Ball so that Marco wouldn't ask Star out on a date. He never considered that Marco would try to ask another girl, though he says it's pathetic that Marco hasn't done so till now.
- Call-Back: Tom admits to casting the curse of the Naysaya on Marco "before we started hanging out". He's also surprised that Marco hasn't asked anyone out ever since the Blood Moon Ball.
- Cannot Keep a Secret: Anyone suffering from the curse of the Naysaya is compelled to blurt out their most secret insecurities when they try to talk to the one they love.
- Comically Small Bribe: In exchange for keeping quiet while Marco attempts to ask Jackie out, all Naysaya requests is some cereal. Subverted when Naysaya doesn't keep its word.
- Continuity Nod:
- Marco's locker contains a Mackie Hand poster.
- Janna was able to open Marco's locker because she has the combination, much like when she opened his high security wallet in "Gift of the Card" because she had his thumbprint (as well as all of his sensitive information).
- Food as Bribe: Marco tries to give the Naysaya whatever it wants to make him stop telling secrets. The Naysaya wants cereal, so Marco stuffs him full of it if it promises to let him talk to Jackie. It doesn't work, as apparently the Naysaya has no concept of what a promise is.
- Girls Are Really Scared of Horror Movies: Jackie is no exception, and grabs Marco during the scariest parts, making him nervous.
- Giving Someone the Pointer Finger: When Jackie reads Marco's embarrassing note, Janna stands up in the background, points and goes, "HA!"
- The Glomp: After Marco finally asks Jackie out, Star is so excited that she tackles him in a hug onscreen, from offscreen.
- Heroic Self-Deprecation: Marco is such a mess of insecurities that he actually wants to get physically punished for petty reasons.
- Hypocritical Humor: Tom ribs on Marco for not having asked a girl out since the Blood Moon Ball, when Tom has spent a good portion of his screentime obsessing over Star.
- Just the Way You Are: Jackie hears a lot about Marco's insecurities, including ones that he blurts out to get rid of the Naysaya. She still says yes and invites him to go to a movie with her and her friends.
- Karma Houdini: Tom suffers no repercussions for cursing Marco.
- Long List: Marco ends up blurting out a list of his deepest insecurities to Jackie in an effort to get rid of the Naysaya. It apparently takes hours.
- Lovable Jock: Chet of the swimming team instantly forgives Marco for spilling food on his jacket and is averse to any violence.
- Oh, Crap!:Marco (referring to the Naysaya): How do I get rid of it?
Tom: Just let it run its course. Once it's shouted all your worst, most shameful secrets, it'll wear off.
Marco: And how long will that take?
Tom: It depends. How insecure are you?
Marco: (Beat) Oh no...
- Really 700 Years Old: The Naysaya head on Marco's neck is apparently the exact same person as the head on an unnamed victim of the same curse from centuries ago depicted in Janna's book.
- Shipper on Deck: Star is ecstatic that Marco finally asked Jackie out.
- Shout-Out: Marco reveals that he stopped taking baths and stuck to showers after watching "that shark movie".
- Situational Sociability: The Naysaya only manages independent speech when talking to Marco directly, but when Janna greets him for the first time the Naysaya only blurts out one of Marco's insecurities.
- Stop Hitting Yourself: After bumping into Chet at the cafeteria, Marco tells him to punch him. When Chet refuses, Marco takes Chet's arm and punches himself out with it.
- Third-Person Person: The Naysaya is one. It apparently makes whoever it possesses into one, too.
- Throw the Dog a Bone: Marco and Jackie finally go out on their first date.
- What the Hell Is That Accent?: When Naysaya formally introduces itself to Jackie, Sabrina is surprised that the head growing out of Marco's neck has a British accent.