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 Bottom[?] and then sticks an ass's head on him. He also sticks love-in-idleness in the eyes of the lovers.
... verbs tenses (a very inexact application of the word, since more distinctions than simply tense are expressed) are organized into four 'systems' (plus gerunds and ...