It was a quiet night in the house, the kind of calm that usually signaled Dexter was up to no good in his secret laboratory. However, tonight was different. Everyone was sound asleep—except for one.

In the dead of night, Dexter, still in his lab coat and goggles, was sleepwalking. His tiny feet shuffled down the hallway, his eyes barely open but his brain firing on all cylinders. He pushed open the bathroom door and marched straight toward the sink, his face blank yet determined.

Inside, Dexter's mom was brushing her teeth, her hair still in curlers. She blinked as Dexter walked in, clutching a wrench in one hand, his eyes glazed over.

"Dexter, sweetie, what are you doing up so late?" she asked, though her words were muffled by the toothbrush in her mouth.

Dexter mumbled incoherently, "Must... dissect... hydraulic system... inefficient water flow... adjust pressure to optimal psi...," as he knelt in front of the sink.

"Dexter? Honey?" She removed the toothbrush and watched in disbelief as her son expertly unscrewed the faucet knobs like a mini plumber in a trance.

He popped open the faucet cover and began muttering to himself, "Fluctuating gaskets... imperceptible leaks... need to replace... valves... water filtration compromised..."

His mom watched in a mix of confusion and horror as her genius son reached for the pipes, completely oblivious to the fact that he was sleepwalking—or that water would soon gush everywhere.

"Dexter! You are NOT taking apart the bathroom sink again! The last time you did that, the kitchen turned into an indoor pool!" She rushed over to stop him, but Dexter was too quick. He yanked at a pipe and suddenly—

WHOOSH!

A geyser of water shot into the air, drenching both Dexter and his mom. She let out a startled yelp, while Dexter, still fast asleep, simply blinked and wiped his fogged-up goggles as if nothing unusual had happened.

"I knew it... flawed hydraulic design...," Dexter mumbled, completely unaware that the bathroom was flooding around him.

His mom, soaked from head to toe, was torn between laughing and calling a plumber at 2 a.m. She placed her hands on her hips, trying to get control of the situation. "Dexter, sweetheart, you are sleepwalking! Put the wrench down, or so help me—"

Dexter, still focused on his 'repair,' reached into his lab coat and pulled out a miniature blowtorch.

"Time to fix this once and for all...," he muttered.

His mom's eyes widened in panic. "NO BLOWTORCHES IN THE BATHROOM, DEXTER!"

Before Dexter could ignite the torch, she gently grabbed him by the shoulders and shook him awake. His eyes blinked rapidly, and he looked around in confusion.

"Huh? What is—? Why am I in the bathroom?"

"Dexter," she said, trying to stay calm as water sloshed around her feet, "you were sleepwalking. And now... you've flooded the bathroom again!"

Dexter looked down at the soaked floor, then at his mother. "Oh. Uh... Well, on the bright side, I've pinpointed the exact cause of the leak."

"DEXTER!"

The next morning, the family had a brand new sink... and an emergency plumber on speed dial. Dexter, embarrassed but secretly proud of his nocturnal handiwork, vowed to only disassemble things while awake from now on.

Or at least, until the next midnight experiment.