A/N - Thanks for the reviews guys. Enjoy!

Justified

That should correct the problem.

Just what he wanted to hear while meditating. A shrieking sound from the bathroom, in the unmistakable voice of his eldest son. With a deep sign Hamato Splinter rose from his meditating position in the sanctity of his room, and prepared to intervene in what he was certain was going to give him a headache.

'I wonder if Donatello could soundproof my room' Splinter thought irritably as he made his way towards the source of the shrieking that he was now certain originated from the bathroom.

As he approached the door way his quick eyes noticed Donatello, Michelangelo and Raphael hiding in the shadows near to the bathroom and appeared to be totally transfixed on what was going on within the bathroom.

Deciding to deal with them first Splinter approached his troublesome sons.

"Is there something interesting happening in there?" Splinter inquired.

Startled the three turtles jumped at the sound of Splinter's voice and turned to face him.

"You gotta stop sneaking up on us like that Sensei! Give a turtle a heart attack why don't ya" replied Raphael looking surprised.

"My room now!" snapped the Ninja master clearly in no mood for excuses.

"But we may be innocent!" protested Michelangelo.

"Go" repeated Splinter with an edge of irritation in his voice that sent the three turtles in question traipsing towards his room. Resignation plastered on their faces.

Marching towards the bathroom where the shrieking had changed to whimpering Splinter was met with an unsettling sight. Leonardo was kneeling on the floor of the bathroom facing towards the full length mirror in the room with his Katanas and sheaths on the floor in front of him. His green body appeared to be covered in ink and across his shell there was a large bright red letter 'F' painted on to it.

"Leonardo what is wrong?" questioned Splinter as his eldest turned to face him.

"Master Splinter I failed you! I am not worthy to be your son, I understand if you disown me and throw me out!" cried the blue masked turtle as he prostrated himself on the floor before his Father.

Slightly unnerved at the performance of his usually stoic son, Splinter looked closer at his son and noticed that the letter 'F' appeared to have been stamped across Leonardo's body in bright red ink. The letter covered his arms, legs, plastron and even appeared in the middle of his forehead and on the tails of his bandanna.

Leonardo was still lying before him on the floor and Splinter was momentarily stunned into silence. After a moments consideration he realized Leonardo was unlikely to be of much help in discovering what had happened and instead decided that interrogating his other sons was likely to bring a quicker end to his saga.

"Leonardo meditate in the Dojo and calm yourself. I will speak to you later my son" announced Splinter who watched as his proud son rose slightly from his position and crawled across the floor of the lair towards the Dojo. His prized Katana lying discarded on the floor.

Making his way back towards his room, the rat mentally prepared himself for what was sure to be a confusing and strange tale.

As he approached the door it surprised him that his sons were silent. Usually they were assigning blame to one another at this point. Marching past his kneeling sons, Splinter took his place opposite them.

"You want to know what happened to Leo right?" asked Donatello before Splinter had chance to question them.

Splinter nodded slightly signalling for him to continue.

"OK we'll tell you what happened but you should know that it was only right" continued Donatello as Michelangelo and Raphael remained silent. It was apparent to Splinter that Donatello was the nominated spokes-turtle for this scheme, but the rat said nothing and let his son continue.

The night before

"Hey Leo, I bet I can beat you on this quiz" taunted Michelangelo to his older brother who was currently reading on the sofa.

"What quiz?" questioned the blue masked turtle without moving his eyes from his book

"Donnie found this quiz online and showed it to Master Splinter who said that only true Ninjas could pass a quiz like that so Master Splinter did it and passed and then Raph and Donnie did it too and passed and I'm about to do it myself. You wanna have a go too bro?"

"Sure I'll probably find it easier than you will though, so don't be too hard on yourself if you fail bro" answered Leonardo as he marked his place in the book and stood to face his orange banded brother.

Hiding the spike of annoyance at Leonardo's answer, Michelangelo forced a smile and bounced towards Donnie's lab. "Donnie has it set up in here Leo!"

As both turtles assembled in Donnie's lab they were met with a grinning Raph and Donnie turned in his computer chair to face his brothers.

"So who's going first then?" asked Donatello knowing instantly what both brothers were here to do.

"I will" answered the eldest turtle immediately and took the seat offered to him by Don. The quiz was already set up on the computer and cracking his knuckles Leonardo set down to begin...

5 minutes later...

"I failed" whispered Leonardo as he stared mortified at the screen in front of him displaying a large F and announcing he had got 0 out of 15 questions correct.

A light clicking sound caught his attention and he turned to see a piece of paper sticking out of Donnie's printer.

"Here's your results Leo, you might want to practice a bit more bro you're the only one who hasn't passed yet" announced Raphael as he lifted the paper from the printer and placed it in a pile with three other sheets of paper that upon further inspection were the results from Raph, Donnie and Splinter.

"But how..." whispered Leonardo. The questions were easy, or so he thought the correct answer stood out among the other stupid answer options.

"Step aside Leo and let a pro show you how it's done!" called Mikey as he pushed his brother out of the chair and restarted the quiz.

5 minutes of silence later and Michelangelo's results were being calculated. A large A appeared on the screen and it was confirmed that Mikey had answered all 15 questions correctly.

"Woo hoo!" shouted an excited Michelangelo and swiftly high threed Donnie and Raph.

"So wait" said Leonardo interrupting his celebrating brothers " you all got an A, and answered every question right.

"Yep, even Master Splinter" confirmed a grinning Michelangelo "Don't worry bro we won't tell Master Splinter yet, we can help you practice and then maybe you'll pass too!"

"Don't worry Leo, not everyone can be a true Ninja straight away" added Donnie

"Yeah some people just take more time to get the hang of Ninja stuff" finished Raphael patting his older brother on the shoulder.

"Uh yeah well it's getting late, I think I night turn in for the night" replied a despondent Leonardo as he left the lab and headed towards his room.

"Phase 1 complete" announced Raphael sharing an evil look with his remaining brothers.

2 hours later...

In the dark stillness of the lair three figures moved silently towards the bedroom of Leonardo. For the next phase of their plan they needed Leonardo to stay asleep and it was unfortunate that he was such a light sleeper. Pushing the door open a crack, Donatello let a tiny metal ball roll in to the room where it stopped by the bottom of their blue clad brothers' bed. Easing the door closed again, Donatello pressed the button on a small remote and the small metal ball opened silently and released an airborne sleeping agent into the air. After waiting outside the door silently for 5 minutes while the air cleared, the three intruders quietly entered their older brothers' bedroom.

Like clockwork the three brothers began the process of stamping the letter 'F' all over their brothers body, making sure to remain as quiet as possible even though it became more apparent to them that Leonardo was sound asleep and would not wake up yet. His mask tails were also stamped and his katanas were removed from their sheaths and stamped too. Carefully they turned Leonardo over and Raphael produced the red paint and brush he had brought and proceeded to paint a large F on the sleeping turtles shell.

Their task done, they returned Leonardo to his previous sleeping position and left the room silently. Now all they had to do was wait until their brother woke up...

Present

... so that was where you found us this morning while Leo had a meltdown in the bathroom" finished Donatello, bringing a close to their tale of deceit.

After listening in stunned silence Splinter eventually asked the question that had been plaguing him though he suspected he knew the answer. "Why?"

"He tested our ninja knowledge and gave us report cards, so it was only fair we did the same to him!" explained Michelangelo.

It was a cruel way of teaching their brother a lesson but as Splinter eyed the folded piece of paper full of parenting advice, Leonardo had presented to him he thought it wasn't entirely unjustified.