A quick oneshot borne of exam stress and based on the realisation that The Doctor gets looks younger with each regeneration.
I should really be working on my other fic. The Time Lady of Hogwarts, but my muse struck me upside the head screaming "Write this or no exams for you" needless to say I complied...Anyway...Doctor Who belongs to the BBC. I don't own it so don't sue! I'm broke.
The Doctor saw the laser burst leave the sontaran's gun and head towards Rory. Knowing that Amy would kill him if Rory died again, not to mention that when Rory inevitably came back from the dead, he'd be on the end of some disappointed stares and that Jack was too far away to sacrifice himself, he did the only thing available and pushed Rory out of the way taking the laser blast himself.
He felt his hearts stop and knew what was coming. Amy, Rory and Jack ran over to him, Jack having shot the Sontaran. He yelled at them to stay back even as he started to glow. Giving himself over to the golden light he closed his eyes so he wasn't blinded. When he opened them again he noticed the weird looks he was recieving. Looking down he saw why...The Doctor had regenerated into a toddler.
He noticed Amy and Jack holding back laughter but was gratified to see Rory more composed "Well, we are in a pickle now" he lisped. At this, even Rory lost his composture, hearing a toddler speaking like The Doctor was too much, even for him, and joined the others in a laughing fit "i's not funny Rowy" The Doctor said crossly but recieved only more laughs and an "Aww" from Amy. The Doctor pouted even as the TARDIS's laughter reached him through their bond.