The "Rude Mechanicals," a group of amateur actors including Nick Bottom the weaver, perform a play-within-a-play in which Shakespeare comedy?

A Midsummer Night's Dream

The group attempts to stage a production of 'Pyramus and Thisbe' for the wedding of Duke Theseus. During rehearsals, Bottom is famously transformed by the fairy Puck, who gives him the head of a donkey.