The joke involves a person pitching an act to a talent agent. Typically the first line is, "A man walks into a talent agent's office." The man then describes the act. From this point, up to (but not including) the punchline, the teller of the joke is expected to ad-lib the most shocking act they can possibly imagine. This often involves elements of incest, group sex, graphic violence, defecation, coprophilia, necrophilia, bestiality, rape, child sexual abuse, and various other taboo behaviors.