Well, here's one: Brutus is at home, pondering in a soliloquy whether Caesar ought to be murdered. He decides a pre-emptive strike is a good idea. A group of conspirators arrive at Brutus' place and...
act 1 scene 1, line 13. "A trade sir, that, I hope, may use with a safe conscience, which is indeed, sir, a mender of bad soles." The pun is Bad soles, it has a double meaning of bad souls. "Truly,...