You seem to have a dirty mind, that's not what I meant. They wouldn't be doing anything different than what they are now, it could be a sleep over, get everyone involved. Irene put some clothes on, it's not that kind of sleep over!
'Cause I had thought about it before, and I thought it was funny. If everyone had like a giant sleepover in the show, Irene would probally get the wrong idea 'cause she's like that. Plus, the first time Irene is introduced in the show she shows up naked and they're like, "put some clothes on!"
Aww, I love seeing brotherly moments between them like this. They look like kids, like if they had grown up together as brothers. I don't know what Lestrade's problem is, it's not like they're DOING anything.