Uh-oh. He’s pulled out the Dad!voice.
It seems like an appropriate response to anything Sherlock does.
I broke Mycrofts umbrella-SH
HAD A FIGHT WITH JOHN- SH
KICKED DONAVIN FOR CALLING ME A FREAK-SH
LOST MY SHOCK BLANKET-SH
SLEPT WITH JOHN-SH
Hahahaha!!! The last one!!