O, look! methinks I see my cousin’s ghost
Seeking out Romeo, that did spit his body
Upon a rapier’s point: stay, Tybalt, stay!

– William Shakespeare

Romeo and Juliet, Act 4, Scene 3. Juliet’s imagination runs riot when she considers what will happen when the effect of the sleeping potion wears off and she wakes up in the family vault. She visualizes the ghost of her slain cousin Tybalt rising up and attacking Romeo.