Brain Freeze

Dr Knowles and Professor McCork ask the question 'How does my heart keep beating?' Backstage, Ms Hucklebuck challenges everyone to solve a tricky riddle. Colin decides to start a new fitness regime which helps Knowles realise that she might need more than pure brainpower for this tricky challenge.

The Brain Freeze team are going green as they ask the question 'How much plastic is there in the oceans?' Meanwhile McCork starts his own dodgy campaign to save the planet by not changing his underpants, which gains a worrying amount of traction. This will end but it cannot end well.

Dr Knowles and Professor McCork ask the question 'Which animal can turn invisible?' and backstage, the annual Brain Freeze hide and seek day is kicking off. Anyone can play but poor McCork is still struggling to grasp the basic rules of the game.

Dr Knowles and Professor McCork ask the question 'Could pineapples grow on the moon?' while battling with a lack of oxygen, homesickness and some bad chocolate etiquette. Colin and Ms Hucklebuck remain at Ground Control in the Brain Freeze studio and hope that there isn't a bad atmosphere.

Judge Knowles presides over the Brain Freeze court to try to solve the mysterious disappearance of Ms Hucklebuck's tooth, which she had left out for the Tooth Fairy. There has to be a simple explanation and also an answer to the question 'Why do we have baby teeth?'.

In this very special episode, Brain Freeze broadcasts live from the seaside and asks the question 'Why is the sea salty?' All is going well until McCork introduces his new sidekick Rocky the seagull and suddenly it gets a whole lot harder for floor manager Colin to keep the show on the road.

Dr Knowles and Professor McCork attempt to ask the almost impossible question 'How many plants are there in the world?' Backstage, McCork unveils his mysterious Megaphone of Truth, an odd contraption which makes it impossible to lie. When it comes to Colin's turn, he has an awful lot to get off his chest.

McCork and Hucklebuck attempt to break the record for the world's biggest ice cream cone in the Brain Freeze studio and Dr Knowles answers the question 'Can ice cubes sink in water?'. What can possibly go wrong?

Dr Knowles and Professor McCork ask the question 'Are we all related?'. Meanwhile, off air, Colin discovers an old treasure chest owned by his great great great great uncle Percy. Will the Brain Freeze floor manager embrace his swashbuckling family tradition as a salty sea dog or will he leave things as they arrrrgggghhhhhh?