The Doctor and Strax in “The Snowmen”

What are you doing here?

Madame Vastra wondered if you were needing any grenades?

Grenades?

She might have said "help".

Help for what?

Well, your investigation.

[looking offended] Investigation? Who says I'm investigating? Do you think I'm going to start investigating just because some bird smiles at me? Who do you think I am?!

... Sherlock Holmes.

Don't be clever, Strax, it doesn't suit you.

Sorry, sir.

I'm the clever one, you're the potato one!

Yes, sir.

Now go away.

[snidely] Yes...Mister Holmes. [leaves, sniggering]

Oi! Shut up! You're not clever or funny, and you've got tiny little legs!