Fear of Shrinking (Reducophobia) The Adventures of Figaro Pho : Season 1 Episode 13

Figaro finds a secret box that contains a jar with a shrunken head and a native blowpipe. When Figaro tries it out, the dart ricochets off a wall and sticks in Figaro's neck. Noticing that the shrunken head also has a dart in its neck, Figaro is immediately terrified that he is going to shrink – and so he does!