Wearing a blindfold, blow up a balloon so that its circumference is the same as the length of a cucumber.
Part 1 - Wearing this blindfold, blow up this balloon so that its circumference is the same as the length of a standard cucumber. You have one minute. Your time starts when Alex blows his whistle. Part 2 - Spot the difference. Have a look at the scene in front of you and explain exactly what's changed since you put the blindfold on. You have two minutes. Your time starts now.
Series 5 / Episode 4