superoreoman:

sherrinfordeductions replied to your post “I bet John and Sherlock pull pranks when they’re bored between cases”

This is canon.

Imagine though stupid prank calls on Mycroft. Or like sneaky putting salt in his tea instead of sugar. They couldn’t do much of anything substantial to him because he’s all knowing and shit, but they can get him with the little pranks.

And with Lestrade, Sherlock relaying a series of bullshit deductions at a crime scene and then standing upright and looking him dead in the eye, and saying “We’re looking for a werewolf” or some shit in the most serious voice. And John gives them away by giggling in the background which makes Sherlock’s serious facade break as he starts chuckling too, and Lestrade rolls his eyes and tries not to smile and threatens to ban them from cases (but never does as long as they take the rest of the case seriously)

Or making Molly jump by like setting something up to inflate and deflate in a corpse’s stomach. Or actually, hiding in the cold chambers right before she comes in so when she slides out the body it’s one of these two losers making a face at her. 

And I imagine (even though WE never see him) that they see Mike sometimes, and prank him a lot because he takes it in stride and always chuckles with them afterward, never holds a grudge.

Mrs Hudson is the only one safe from their shenanigans because they tried once and NEVER AGAIN