Toddler Who: Big'n'Little

  "Is that supposed to be me? Curls? How absurd." The Twelfth Doctor was frowning and rubbing his chin, walking around without tearing his eyes off the much smaller being mirroring his expression (and not only).
  "I am not 'Me', I am Pee-ter!" The little boy with full head of ashy-shaded curls pouted and crossed his arms. "And you're BORING."
  "Boring? Me? Ha-ha, you haven't seen me yet, little puddingbrain!"
  Peter was no longer paying attention, attracted by a huge blackboard close to the nearest bookshelf. He could never resist writing something on such boards, even when it was understandable only for him.
  "Hmm, you seem to be cleverer than I thought... HEY!"
  "Wheeeeeeeeee!"
  A blur of tweed clothing and floppy hair darted past them. Those were Eleven with little Matt riding on his shoulders, both careless about possible consequences. The taller version darted down to the console, stopped, grabbed Matt by his middle, tossed him into the air and caught again.
  "More! More!" Matt demanded, clapping his hands.
  "What if he landed onto my lab table?" Three commented. He was explaining the principle of some hi-tech mechanism to Jon, who was all ears.
  "You'd made more," Eleven smirked. Matt thumbed his nose at Three, and the two were gone before the white-haired Timelord and his mini version could've done anything. But hardly had the floppy-haired duo gone from sight, there was another distraction - howling sounds from the corridor. Those were Two and Patrick, who imagined themselves to be a wind instrument duet. Patrick was playing the recorder, while Two decided to take up something more grandiose. The saxophone, to be exact.
  "Is that Patrick always like this?" Three asked, leaning down to Jon. The boy shook his head:
  "Patrick's always shy. I've never seen him this en-too-see-as-teek. Even Matt can't get him outta his shell sometimes."
  Three shrugged and went on with 'super-exact point welding', as he called it before. Not only Two and Patrick decided to take up musical activities, though here it wasn't heard. Far from the console room, in the renewed karaoke bar, Eight, Paul and Ganny were practicing their singing skills.
  "Well, you're a good old boy," Paul sang.
  "And you're a decent bloke," Ganny caught up.
  "I say it's irony..."
  "I say that it's a joke..."
  "Now when you look at us and you can see," Eight put in, and all three finished the stanza with:
  "We ain't so different, you and me..."
  This song was perfect for them. Paul and Ganny were twins, but completely different from the very beginning, and the lyrics were about Americans and the English who also were different (first of all it was about language), but still not so opposite. Ganny took up the role of the English, while Paul got the role of the American. Eight took part in more than one-person lines.
  "Awwwww!" Ten appeared to be standing in the doors and watching them, while David and Johnny were chasing each other behind his back. "I still cannot cope with them. Teach me your good child-caring skills, huh?"
  "Awwwwwww," Eight replied, eyeing the spiky-haired twins who stopped at this moment. "Did that big mean owd Timeword fwighten you?"
  Paul and Ganny gave out a combined huge "pffffff-hahahahah!" at Ten's expression.
  "A bit of humour. And not too much drama," Eight went on and turned on the next song - Love Don't Die by The Fray.
  Ten rolled his eyes - thoughts of 'have I been like this?' sometimes visited him as well - and left the room. Just to bump into Four, who, unlike the rest of the Doctors, didn't have a little doppelganger by his side.
  "Anybody saw that half-insane wonder?" Four asked. "He nicked all my jelly babies, and I doubt that he would share 'em with anyone?"
  A giggle and a sound of small feet against the floor were the clearest answers, so Four followed them and then caught the curly-haired kid almost completely wrapped in his stripy scarf behind the corner.
  "Uh-oh. Tom's got enough sweet teeth for all of us," David whispered to Ten.
  Tom was no longer able to stand still. In his normal condition he was quite bouncy, and when sugared up... there was no talking about anything apart a human tsunami. Or a tornado.
  "An' me?.."
  This last was of course from Sylvester, who also had a weakness for jelly babies. He seemed to be offended by the fact that Tom munched away all of them. But Seven quickly found a way to cheer him up by pulling a small paper bag out of his little double's pocket.
  Sylvester stared at him.
  "Can you teach me to do that?"
  "I can teach you something much better." Seven tapped on Sylvester's nose, reassuring him. "Want it?"
  "Yesyesyes!"
  "And share some with me!" Colin shouted from the closest room, where he and Six were trying out new outfit variations (all as hideous as their usual ones, if not more). Right now they had oversized English police helmets on their heads, so their yellow curls were pressed down.
  Sylvester marked this in his mind - he knew that not satisfying Colin's requests could result into worse. The same was with Chris. But luckily he didn't hear anything about the jelly babies because he (together with Nine) was engaged into a wild dance sequence to the thundering symphony version of Smells Like Teen Spirit.
  Perhaps the quietest here was Petey, whose adult counterpart was teaching him tricks with cricket balls. Juggling and all. And Billy, who was completely engaged in stories which One was telling him (all of which were true).

  "I just knew that I wasn't going to have someone ordinary as a pair."
  Woooosh.
  "It's not boasting, it's a fact."
  Woooooooosh.
  "Admit it!"
  "Careful, or she will release a load of gunge on your... No-no. You're writing it the wrong way!" Twelve pointed out, having seen that Peter was thoroughly writing a mirrored "S" on the blackboard. The word which contained it appeared to be 'LISTEN'.
  "And the TARDIS wasn't expecting she would have a crazy hobo for a counterpart," One mentioned, entering the console room.
  "Said the future cosmic hobo," Mr. Tardis grinned and was gone - only the tips of the headscarf tied around his insane blue top hat flapped in the air.