It's a pun because Mercutio wasn't a serious man, and grave has 2 meanings: 1. serious, 2. burial site.
This pun is used by Mercutio when he gets wounded by the sword and is dying, so even though the phraseology "grave man" indicates that he is referring to himself as serious, he is actually referring to himself as dead... a man in a grave.
It is foreshadowing that Mercutio is going to tomorrow. Grave is being used as a pun.
Mercutio says, "Ask for me tomorrow and you shall find me a grave man."
The word is grave. After having been stab by Tybalt, Mercutio dies. His last words are..."Ask for me tomorrow, and you shall find me a grave man...."
Paronomasia is punning or making a play on words by taking advantage of the fact that some words have more than one meaning. Mercutio, who has just been fatally wounded says " ask for me tomorrow and ye shall find me a grave man". This uses the fact that grave has two meanings. He sounds as though he is saying he will be grave and serious tomorrow but it can be also be heard that he is saying he will be dead and ready for the grave.
revenge
He cursed the Montagues and Capulets. What he says is "A plague on both your houses!"
It is from Romeo and Juliet and it has two meanings. A "grave man" means hes going to be dead but it also meant back then that you are a serious person. So basically he meant ask me tomorrow and Ill be serious about it, but really meant, ask me tomorrow and ill be dead.
Mercutio from Romeo and Juliet. He says, of his wound, "'Tis not so deep as a well, nor so wide as a church door, but tis enough, 'twill serve. Ask for me tomorrow..."
Mercutio's pun as he died in Shakespeare's "Romeo and Juliet" was a play on words between the word "grave" (meaning serious or solemn) and the word "balm" (meaning healing or soothing), as he said, "Ask for me tomorrow, and you shall find me a grave man." This moment highlights Mercutio's wit and humor even in his final moments, adding complexity to his character and the tragic atmosphere of the play.
It's an example of a pun.
To help you, here is a famous quotation from Shakespeare: "Tomorrow and tomorrow and tomorrow creeps in this petty pace from day to day." (Macbeth) Here is another one: "Call on me tomorrow, and you will find me a grave man." (Romeo and Juliet) Basically, "tomorrow" is "tomorrow"--not surprising really, since Elizabethan English is not a different language from our own.
Mercutio's character is believable because he embodies the nature of the play which is a tragedy. Unlike the other characters, Mercutio acknowledges his awareness that specific people are the cause of his death and not outside forces that represents the superstitious elements found in the play.