Sherlock was curled into a miserable looking ball when John got home from work. He peered at him concernedly for a few moments, but when he wasn't acknowledged, he moved on, taking his coat off and heading up to his room to change into something more comfy. He paused on the stairs when he heard a funny sort of muffled sound, but when nothing followed, he ignored it.
Newly dressed in his most comfortable jumper, John strode through the living room to the kitchen. "Tea, Sherlock?"
There was no answer but a tiny muffled noise, which John took as a yes. Minutes later he was back with the tea, and after placing one by his flat mate, he sat down in his chair and picked up the novel he had been reading last night.
Several times he heard the noise again, but looking up each time to see no change in his flat mate, he ignored it. Finally he was done with his tea and he stood to go place his cup in the sink. He leaned over and checked Sherlock's drink, only to find it still full and cold. He tutted.
"Honestly Sherlock, if you weren't going to drink it, you could've just told me." There was no response and John sighed and grabbed the cup, going to pour it out. When he was done, he snatched up the remote and sat next to Sherlock.
"Budge up will you?" No answer, of course, but John felt better having tried. He switched it on to an interesting looking documentary and relaxed, settling in to a quiet night for the first time since he could remember. Therefore, when the noise sounded again and the whole couch moved the tiniest bit with it, there was the smallest dash of disappointment. He turned to stare at his flat mate. Sherlock was breathing very slowly, very steadily through his nose and a scowl marred his forehead. He seemed deeply in his mind palace, despite not taking up all the couch space like he normally did, but still quite relaxed.
However, as John watched, he tensed, took a small breath through his mouth and held it.
John nearly laughed as a hiccup wreaked Sherlock's body and caused the frown to deepen momentarily before evening out to a mostly relaxed state again. Sherlock had the hiccups.