-sometimes being around Sherlock was like being around a petulant child; a petulant child who with a few words could reduce you to the intelligence level of an earth worm. 

-'Little boys always have nicknames and his nickname shall be Harry.'
-'But my sister's nickname is Harry!'
-'Does she have a copyright?'

-My fulltime job is chasing down serial killers and making your brother tea while he sulks. The surgery is like a hobby I play at in my spare time.'

-Harry bristled. "I'm not normal? You're a pseudo-sentient headdress! And this whole sorting procedure is ridiculous

-"Yes, right," said Sherlock nodding his head. "The point," he continued, "is that Mycroft is harmless. Isn't that right, Mycroft?"
-

Sherlock gave him a look that said he better tell Harry that he was harmless or so help him he would find heads and toes in all of his refrigerators.