S2, E44: The squirrels go to see what Duggee is doing but on the way Tag stumbles on some toy blocks and hurts his knee. How can they make him feel better? Happy's mum always says laughter is the best medicine. But how will they make Tag laugh? A-woof... maybe Duggee can help, he does have his comedy badge! Duggee starts to explain where comedy comes from - a complete history, but the squirrels don't find this very funny. So, they all have a go at saying what makes them chuckle, from Dr. Pluto's Fun facts to Busy Bears. It's a lot of fun but nothing seems to make Tag laugh. What will do the trick?!