Horrid Henry (2006)

S5E15 Horrid Henry: Planet of the Grapes

Title: Horrid Henry: Grape Galaxy Plot: Henry deceives Peter into believing he has discovered a new planet using his telescope. Unbeknownst to Peter, the "planet" he's observing is merely a grape. With clever manipulation, Henry enjoys watching Peter's excitement over what he thinks is a cosmic discovery, all while hiding the truth about the tiny fruit.