"Rose! Where do-" 9 started saying as he bumped into Sherlock. "Oh, I'm sorry. I don't think I have been here before. Say, what's your name?" He puts out his hand as if to shake Sherlock's, but he pulls back.
"My name is Sher-" Sherlock starts.
"Sherlock? As in Sherlock Holmes? The greatest detective ever?"
Sherlock nods.
"Doctor, who is his little friend?" Rose whispers into 9's ear.
Sherlock and John turn around to start walking back, but John walks up to Rose instead.
"My name is-"
"John Watson. Sherlock's consulting detective. Believed lover of. Some sorts." 9 looks him up and down, then frowns. "What happened to your knee?"
"Oh-"
"He was in a war and got shut." Sherlock yells over his shoulder.
"Thank you Sherlock. But I think that I can answer these questions for myself." John yells back.
"Sorry 'bout him. So what was both of your names?"
The doctor laughs a little then replies. "Well, you see. I am the-" He breaks out laughing again. "Doctor. You can just-" He snorts and laughs some more. "Call me Doctor."
Rose joins in on the laughing. "I'm Rose Tyler." They continue laughing.
"Why are you two laughing? And why is your name 'The Doctor'?"
Nine and Rose stop laughing, but only for a little bit.
"Doctor, I'll handle this one." 9 nods. "We were laughing because everyone we meet asks the same question as you did."
"Which one?"
"The Doctor one. His name is just that. The Doctor. Why is your name John Watson? There is no explaining a name once you have it."
"Alrighty then. Would you like to come over for tea?" John says, trying to ignore that he had just been told off by a female.
Rose and 9 turned to each other, then back to John. "Sure!" They said in unison.