Church Announcement
An unwanted announcement that an audience feels obligated (or pressured) to stay to listen to at the end of a service or meeting, often provided with extraneous details and information or a request for the audience to take action to participate. At the end of a meeting, someone might mention, "I have a quick church announcement". This implies that the speaker recognizes the audience is ready to leave, but also takes advantage of the opportunity to promote an upcoming event, a request for volunteers, a request for funds, or anything else that they need from that audience that they recognize the audience may not want to hear, but may be guilted into obliging. The irony is, they are rarely "quick".
I have a quick church announcement.