No, no, I am as ugly as a bear,
For beasts that meet me run away for fear.
Therefore no marvel though Demetrius
Do, as a monster, fly my presence thus.

– William Shakespeare

A Midsummer Night’s Dream, Act 2, Scene 2. Helena is feeling a little beaten down in the forest after unsuccessfully chasing after Demetrius, who spurns and threatens her. Using a simile she compares herself to an ugly bear.