Sherlock was sitting, tuning his violin, in his armchair when John came thundering down the stairs and burst into the room wearing a festive Christmas jumper and hat.
Sherlock groaned in disapproval at the sight, "What in God's name are you wearing John?"
"Good morning to you too. And I'm wearing festive clothing" John replied in a happy tone, starting to hum Jingle bells to himself as he rummaged in the cupboards and produced two thin cardboard boxes.
"Well obviously, but I mean why John?"
"It's the first of December, Sherlock." John answered placing the two cardboard boxes on the mantel piece. "There, one for you and one for me."
"Oh John!" Sherlock exclaimed. " Why did you buy me an advent calendar? You know food, especially sugary food, only slows down my thinking."
"Oh lighten up and get in the Christmas spirit! You don't even have a case on at the moment so you have no reason not to be eating."
Just as John finished speaking Sherlock's phone buzzed.
"Haha, you spoke too soon John! C'mon, grab your coat. Lestrade wants to meet us at the scene in 5." Sherlock spoke joyfully as he jumped out of his seat, grabbed his coat and scarf and made his way downstairs to hail a cab. "Oh and you can take off that blasted hat before you leave."