Once when Sherlock had the whole gang over at the flat, he accidentally said he went to the Mycroft store instead of Microsoft store.
Sherlock: You know today I went to the Mycroft store-
Mycroft: The what?
Sherlock: Sorry, the Microsoft store.
Greg: *Trying to stifle his laughter*
Greg: *Burst out laughing*
Mycroft: ANYWAY-
John: I'll see ya later Microsoft
Greg: Yeah bye Microsoft, darling
Sherlock: Goodbye dear brother mine, Microsoft
Mycroft: SHERLOCK-