Say what you mean

Three and Four are in the Cosy Room watching TV. Four, feeling that it's a bit cramped (or "squishy" as he puts it) tells her to budge up, but she goes towards him. When he clarifies, she chastises him for being ambiguous. She moves over, but he's unsatisfied and demonstrates how far he wants her to "budge". Three, still sulky about Four's ambiguous phrasing, says that there's no pointing in budging now as Four already did it. Four agrees, but Three considers budging up anyway, only for the alarm to sound.

The problem, reported by Agent 34, is that a girl was using a too-small hairbrush. Then, when asking for a bigger brush, got a broom. Also, a boy was drawing and wanted a bigger piece of paper but got one that was too big. Four prepares to be launched, and the woman is in the living room, but they don't ring the doorbell: they just wait until she climbs the stairs.

After being launched, Four lands on a door and finds the boy planning to recycle the giant paper and the girl having a friend over to help brush her hair with the broom. The Numberjacks point out that although the kids are making do, it's still a problem and they need to know when things went wrong.

The agents pointed out that those kids wished for bigger items but didn't specify how much bigger. Then, the janitor has trouble using a full-sized broom with a dustpan, so he wishes for a smaller brush and gets an artist's paintbrush.

Four spots the Problem Blob in the gymnasium, and believes that he made the wonky wish-granting happen. Sure enough, there is slime on the back of his boiler suit. He gets hot, wishes for something to wipe himself with, and gets a giant hanky.

At the cafe, a woman orders "a few beans" with her lunch, but she gets slimed, so the waitress gives her three beans. The diner asks for more beans, so the waitress dumps the entire bowl onto her plate. Five then imagines a boy being cold in his bed and getting a doll's blanket, a girl wishing for a bike and getting one that was too big, and a boy wishing for ice cream and getting a whole lake of it.

At a picnic, the Problem Blob makes some of the sandwich huge and others tiny. They make brain gain to make the sandwiches the size of a hand and it works, but when the drinks get served, one girl gets a thimble-sized cup of drink, while another gets a bucketful. The Numberjacks make brain gain to make the cups the size of someone's cupped hands. Then, they make a final lot of brain gain to send the blob flying, but he only jumps about six feet away. So, they specify to send him so far away they can't see him, as the girl, the boy, the cleaner, and the woman are being reverted back to normal.

Four comes back, they recap the episode, then Three, Four, and Five watch TV in the Cosy Room, while the latter asks the viewers to find something the size of their hand.