Lestrade: Sherlock, have you spiked John’s coffee again?
Sherlock: It’s an experiment. But how did you know?
Lestrade: Because he’s doing shadow puppets in the back of our crime-scene.
Everyone: [turns to look, and catch John in the process of doing a Nosferatu impression]
Sherlock: *calls* John…?
Sherlock: What are you doing…?
John: ’Crocodile Attacking Disfigured Rabbit.’ It’s my favourite. Come and have a go, it’s fun!
Everyone: [turns to look at each other]
*lack of eye-contact*
Everyone: [rushes to join in]