Lysander, speak again.
Thou runaway, thou coward, art thou fled?
Speak! In some bush? Where dost thou hide thy head?

– William Shakespeare

A Midsummer Night’s Dream, Act 3, Scene 2. Demetrius calls out to Lysander to reveal himself and say something. He labels him a coward and a runaway for hiding himself away. What he doesn’t know is that the mischevious Puck is manipulating the situation and mimicking the voices of the two Athenian rivals. Since the audience is aware, this is dramatic irony.