Answer: The person will fall in love with the next living thing he or she sees.
In A Midsummer Night's Dream, Oberon, king of the fairies and Titania, his wife, are fighting over an Indian changeling that Titania has adopted. Oberon is mad at Titania's disobedience, and he wants to punish her. He asks Puck to help him device a potion from a magical flower. The potion is meant to be rubbed in the eyes of a sleeping person. When the person wakes up, he or she is meant to fall in love with the next living thing he or she sees.