Greg, in his head: Wait, is Mycroft actually into me? Quick, I’ll make a bad joke and see if he laughs.
Greg: Hey Mycroft, did you hear the one about the skeleton who couldn’t go to the party? He had no BODY to go with.
Mycroft: *laughs*
Greg, in his head: Well that’s not a fair test – that joke’s hilarious

Mycroft: This is not working out. You two will just have to sit down and talk it out. We’ll start small. Sherlock, say something nice to Gregory.
Sherlock: Okay, fine. Despite my initial-
Greg: Absolutely insane behaviour-
Sherlock: Shut up- despite my initial concerns, I can see now that you seem to make Mycroft very happy and that’s… good.
Mycroft: Alright. Now Gregory, now you say something nice to Sherlock.
Greg: Sherlock… you’ve got a really hot brother.

Greg: Okay guys, how do I ask Mycroft out?
Mary: Roses are red, violets are blue, my bed has room for two.
Greg: Oh my god, no!
John: Twinkle twinkle little star, we can do it in a car.
Greg: STOP IT!
Sally: Row, row, row your boat, gently down the stream. Merrily, merrily, merrily, merrily, I can make you scream.
Greg: Fuck you all. I’m leaving.