It was a lazy Saturday afternoon in the Cooper household, the kind where Sheldon could be found on the living room couch, deeply engrossed in a physics book that was a little too heavy for his age but perfect for his intellect. Georgie and Missy, on the other hand, were up to no good, as usual.

"Hey, Missy," Georgie whispered, eyes twinkling with mischief, "You think Sheldon would survive a fart attack?"

Missy grinned. "Doubt it. He might implode."

The two siblings crept toward the unsuspecting Sheldon, who was oblivious to their approach. His brain was far too focused on string theory to sense the chaos lurking behind him.

"Ready?" Georgie mouthed to Missy. She nodded.

In perfect synchronization, Georgie leaned in on one side of the couch, Missy on the other, and…pppfffttt!

The sound echoed through the living room like a trumpet announcing the end of times.

Sheldon's nose twitched immediately. "What is that smell?" he muttered, eyes widening in horror.

Georgie and Missy stood back, trying to stifle their laughter.

It hit him.

Sheldon shot up from the couch as if launched by a rocket. "It reeks!" he screamed, running in circles around the room, flapping his arms as though it would help dissipate the odor. "It reeks! It reeks! It's a biological weapon!"

Georgie, bent over laughing, could barely breathe. "You should've seen your face, Shelly!"

Missy was rolling on the floor, tears of laughter streaming down her cheeks. "He's gonna need a gas mask!"

Sheldon, now at full panic mode, dashed to the kitchen where Mary was preparing dinner. "Mom! MOM!" he shrieked. "They… they… they gassed me! It's unbearable!"

Mary sighed, already sensing where this was going. "Sheldon, honey, calm down. It's just a little gas. Ain't nothing deadly."

"Deadly?!" Sheldon's voice hit a new pitch. "I'm pretty sure it's illegal under the Geneva Conventions!"

Mary shook her head, wiping her hands on a towel as she made her way to the living room, where Georgie and Missy were still giggling uncontrollably. "Alright, you two," she said, her hands on her hips, "What did I say about tormenting your brother?"

Missy barely managed to speak between fits of laughter. "We didn't torment him, Mama. We just—"

"I don't wanna hear it!" Mary interrupted. "Go apologize to your brother right now."

Georgie shrugged. "Sorry, Shelly."

Missy managed a half-hearted, "Yeah, sorry," before snickering again.

Sheldon, still fanning himself with a dishtowel, sniffed indignantly. "Your apologies are meaningless. My olfactory system may never recover."

"Your what now?" Georgie asked, scratching his head.

"His nose, Georgie," Mary said, exasperated. "His nose."

"Whatever. He'll live." Georgie grabbed a snack and headed out, but not before shooting Sheldon a teasing look. "Watch out, Shelly. Round two's coming later."

Sheldon recoiled in fear. "I need a gas mask," he muttered, scurrying back to his room as fast as he could.

Mary shook her head and glanced at Missy, who was still trying not to laugh. "You think this is funny, young lady?"

Missy shrugged. "A little."

Mary fought the urge to smile. "Alright, that's enough. No more farting on your brother."

As Mary returned to the kitchen, she could still hear Sheldon's faint voice echoing from down the hallway. "It still reeks!"