Prompt from cjnwriter: Hot chocolate
"Come in, Holmes!" I said cheerily. "We've just served the hot chocolate, there's easily enough or another mug."
"No, thank you, Watson. I have a case that can't wait."
"Not even an hour?"
"Not more than ten minutes! I must catch the last train to Shropshire, a man's life depends on it."
I checked my watch and frowned. "Holmes, the last train is three hours from now." I took a closer look at my friend, and spotted the usual signs he was on an extended case - sharp cheekbones from lack of food, eager glint in his eye from the excitement of the chase - and, most importantly, a pallor from lack of sleep. "You didn't wind your watch last night."
"Nonsense, Watson! Now, I must leave you, I must catch that train." He turned to go, and I caught his arm, noting its thinness.
"Check my watch if you don't believe me, Holmes, but I am not letting you go until you've had some hot chocolate with me and Mary. You have time."
I knew Holmes was quite capable of tearing out of my grip, but he did not. To my shock, he did not even insist on checking my watch. Rather, he stared intently at my face, then laughed. "You have always been a terrible liar, Watson. Let's go in, I wouldn't want our hot chocolate to grow cold."