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.
Awwww.... from David Tennant's Video Diaries (HOW DID THEY NOT GET MARRIED IN REAL LIFE?!!?) ^I reiterate the last pinner's question!! I have often wondered the same thing myself. I would so totally ship them... but then I remember that he's married.