(Thank you, @Aspens_Treehouse, for the request)
The three Doctors, the Tenth, the Eleventh and the War Doctor, have just saved planet Earth, again, from the zygons. Now, they're hanging out in the Eleventh Doctor's TARDIS with Clara. Out of nowhere, the whooshing of a materialising TARDIS is heard, the three Doctors rushing out to see what is happening.
"I'm still the Doctor." You reassure yourself as you land your TARDIS and the coordinates you had been sent. "I'll always be the Doctor, even if I am... A bit late. Eh, it's only by a few hours, no big problem." Not even remembering what you were trying to say before you realised the time, you step down from the stool at the console, adjusting your shorts, tshirt and trainers before you leave the TARDIS. You've just recently regenerated, the Seventeenth incarnation, quite a bit smaller than before, left in the body of a child around the age of six.
And there you stand, three of your past incarnations stood before you. You stare and they stare back.
"Is that a child?" The Eleventh incarnation asks.
"What does it look like, you idiot?" The War Doctor replies.
"Hey kid," the Tenth starts. "Is the doctor in there?"