The flat, obviously. You saw the equipment there -- I have no way of knowing whether the hospital will let me in to use theirs, but the chances are slim considering one of us had to build their own laboratory at home.

[ His thoughts are, for a brief moment, entirely derailed by the unexpected but not entirely unpredictable sight of John blushing. It was cold, of course, so they were both red-tipped along the extremities, but it was somehow more intriguing to recognize that in this case, his actions and John's reaction had had a direct correlation. Sherlock uses his height to his advantage, looming slightly as he returns John to their previous position against the trunk of the tree, and this time when he kisses him, intense and focused, it's against the tip of one pink ear. ]