Having a Little Chuckle (S13E05)

Title: A Bit of Laughter Plot: The cast members find themselves puzzled by seemingly straightforward concepts like a high five and a fish tank. Ardal O'Hanlon makes the surprising revelation that a mallet can float, while Bridget Christie brings a gift for the Taskmaster. Meanwhile, Sophie Duker takes an unconventional approach by coating some keys in saliva.