The thing is...I saw this before I watched Sherlock and I didn't think it was funny. Now I've come across it again after I've seen all of Sherlock and I am dying right now, that's totally what happened.
SHERLOCK (BBC) ~ Benedict Cumberbatch (Sherlock) and Martin Freeman (John) behind-the-scenes in a funny moment at the front door of 221B during filming. [GIF]