Many happy returns your royal highness

Random observation: anyone believing in the illuminati/satan-cult-conspiracy-theory would observe the subliminal DEVIL message behind Sherlock.

Oh, also, I did not give you a cake because I have a better surprise for your highness.
I have brought you a horse:

You might ride it yourself, or you might hire a jockey. She's the daughter of the two fastest horses, a guaranteed victor.