How many of Doctors does it take to change a light bulb? First - “Tut tut, i should really fix that light!” Second - “Oh my giddy aunt, that light is still out, it’s so dark….RUN!” Third - “Thanks Jo for getting me that bulb from Sgt. Benton, now lets see..BOOM..oh blast i reversed the polarity of the light bulb flow!” Fourth - “Hmmm...
Just to remind everyone:
thetardis: Rule #1: Moffat lies. Rule #2: Moffat makes others lie. - Zanderpants