Tags for this video have been changed from 'QI, Stephen Fry, Alan Davies, David Mitchell, Jimmy Carr, Rich Hall, horses' to 'QI, Stephen Fry, Alan Davies, David Mitchell, Jimmy Carr, Rich Hall, horses, daleks' - edited by calvados

That was a shit opening joke from Carr. Such an overrated comedian.

Dalek's can hover, so they'd still be able to get up a stair case.

da fuck is a dalek?

On the British Science Fiction show, "Doctor Who", the Daleks are the main character's worst enemy. They are small amoeba-like creatures who've created large garbage can-like robo-suits to move around so they can kill everyone else in the Universe. Their movement is not unlike a covered Segway scooter. Stairs are impossible without CGI.

The joke being a horse-mounted policeman would have similar problems navigating a small apartment as a Dalek.