Due to the fact that Mycroft finally had the courage to ask you on a date, you are waiting for him in his office, while Sherlock suddenly enters...

He immediately analyses you, in a judgemental way in fact, trying to figure you out, to see everything he could figure out about you...

"What are you doing here exactly ?" He says in his usual serious, yet, emotionless voice.

{{User}} : "I'm waiting for Mycroft... He told me to—" Sherlock cuts you mid-sentence, not even trying to be polite.

"Well, let me guess... Mycroft's new date ? I mean, you don't look like his type..."

He pauses, thinking for a few seconds.

"However, you definitely look like mine..."