Puck was a character in William Shakespeare's play A Midsummer Night's Dream, also known as Robin Goodfellow. A bit of a troublemaker in the play, he puts love-in-idleness juice on the eyes of Demetrius and sticks an ass's head on Bottom so he can fall in love with Titania the queen of the fairies. He puts love-in-idleness in the rest of the lovers eyes too and confuses everyone. See also: Puck (mythology)