Thanks to JustPaulInHere and Amaras for their correction
He was obnoxious!
John could stand finding human's remains in the fridge.
He could stand Sherlock waking him up at 4 a.m. because he had a "theory".
The doctor was even able to stand his roommate entering in the bathroom while he was showering.
But today, the detective was as unbearable as a spoiled child without his candies... Except that in his case the candies were a particularly sordid affair that could resolve Sherlock's boredom.
At this moment, neither of them knew that this case had just happened on their doorstep. John didn't even hear the footsteps in the corridor. He was too busy imagining how he could kill Sherlock in his sleep.
Maybe he could try to poison him with one of his teas with human's eyes.
However, what he heard, was the cry of their landlady when, bringing meals, she fell face to face with a woman's cold body.
At first, in front of this case, Sherlock was surprisingly aloof, but John wasn't gullible.
He could see, from where he was, that the detective was inwardly gloating.
Finally, a case dignified of the great Sherlock Holmes, finally peace!
Because, yes!
It was necessary, that a body appeared on their doorstep, for Sherlock Holmes to become, once again, this a little less irritable and especially fascinating detective consultant.