The Master makes Jo eat some porridge while a brain in a box goes for a walk.

Yates discovers that his equipment is well and truly bent and forgets how to ride a bike.

Benton goes on a power trip while the Brigadier sells potatoes and an imaginary dragon argues with an American tourist over a hotel room.

The Doctor has an unnecessary cup of tea.

Mind of Evil? Mind of a Freaking Loony Writer if you ask me.