Bob and Sally were best friends known for their mischief and countless sleepover pranks. They had a history of playing innocent tricks on each other, all in good humor. However, this sleepover was going to be different and Bob had a unique prank in mind.

As the night descended, they began with a couple of board games and rounds of funny stories. But Bob’s mind was elsewhere, he was eagerly waiting for Sally to fall asleep.

Finally, Sally dozed off after their fifth round of storytelling, and Bob seized his chance. With a mischievous grin, he got up and slowly approached the sleeping Sally.

With utmost care, he positioned himself, trying not to wake her up. He had to hold back his laughter, lest he would spoil the surprise.

Bob succeeded in his mission and let out the longest fart on Sally’s face. He tried to contain his laughter, but the sound of the fart and the absurdity of it all made him burst out laughing.

Sally woke up with a start. She was totally confused and saw Bob laughing hysterically. Then it hit her – the smell! She realized what had happened, and despite the smell, she started laughing too.

They both laughed uncontrollably for several minutes until their stomachs hurt. It was disgusting, but they were in splits. Who knew a fart could cause such a hilarious situation?

Finally, their laughter subsided, and they slowly regained their composure. Sally, trying to be stern but failing, told Bob that it was the grossest and funniest thing he had ever done.

Bob, still chuckling, apologized and promised to never pull such a prank again. However, Sally, with a twinkle in her eye, reminded him that revenge is a dish best served cold.

They continued their sleepover traditions, sharing more stories and sipping hot chocolate. Yet, Bob couldn't shake off the feeling that Sally was planning something in return.

When it was time to sleep, Sally insisted that they should sleep in opposite directions. Bob was cautious but agreed, keeping one eye open at all times.

Eventually, Bob fell asleep. The room was quiet except for their soft snoring. It was the perfect situation for Sally to execute her master-plan.

Bob was dreaming when he felt something cold and sticky on his face. He woke up with a start and saw Sally grinning from ear to ear, just as he had done earlier.

It turned out that Sally had taken the leftover chocolate from their hot chocolate session and smeared it on Bob's face. She couldn't have been prouder of her revenge prank.

Bob was momentarily stunned but then he started laughing. Looking at his chocolate-covered face in the mirror, he admitted that Sally had outdone him in the pranks game.

They both agreed this was a sleepover to remember. Their pranks had crossed all boundaries of silliness and brought them endless laughter. It was indeed a fun-filled night.

As dawn broke, they decided to call it a night, or rather a morning. Their faces still flushed from the constant laughter, they bid each other goodnight.

Bob washed off the chocolate from his face and Sally changed her pillowcase. They made a pact to never mention the fart or the chocolate prank outside their secret world.

Eventually, sleep claimed them. Their dreams were filled with uncontrollable laughter and memories of the best sleepover night they ever had.

When Bob and Sally woke up later that day, there were no signs of the previous night's pranks. All that was left were sweet memories and their strong friendship bond.

They spent the rest of the day playing video games and relishing the aftermath of their sleepover pranks. Their laughter still echoed in the room, reminding them of their crazy antics.

Their parents couldn't figure out what had led to such funny laughter fits, but they were just happy to see their kids enjoying. Bob and Sally felt victorious holding onto their secret.

After a hearty dinner, it was time for Sally to leave. They waved each other goodbye, already planning pranks for their next sleepover. The bond of friendship and fun was stronger than ever.

As Bob lay in bed that night, he couldn't help but grin at the memory of the fart prank and how Sally had creatively retaliated. He realized that this sleepover was unlike any other.

That was the night when their sleepover tradition took a hilarious turn, a night filled with laughter and unforgettable pranks. The midnight prank was fixed in their memory forever.

Bob closed his eyes, still laughing at their antics. He knew this was just the beginning. There would be many more sleepovers and countless pranks. But for now, he finally fell asleep with a smile on his face.