It indicates news or unexpected visitors.
Dream dictionary: Alibi dream meanings
…(Weariness | Tiredness | Fatigue) If one finds himself incapable of carrying a conversation out of exhaustion from speaking, or if he refrains from talking either about good or bad, and if this happens inside a courthouse in a dream, it means that he will give up his alibi and loses his case to his adversary, or it could mean that he will become poor and dependent on people’s generosity or that he will become childless….
…In a dream, a neck represents an embrace, a donation with terms, a legal will or a conditional endowment. The neck and the shoulders in a dream represent one’s trust or trustworthiness. A healthy strong neck in a dream means trustworthiness and ability to repay one’s debts. Wounds, festering, or purulence in one’s neck in a dream mean betraying God’s trust. If one sees a nice bird sitting over his neck in a dream, it means benefits or an alibi. If it is not a gentle bird, then it becomes a bad omen or a rebuke. If one sees a necklace, a rope, a wire or a thread wrapped around his neck in a dream, it means fulfilling a promise, acquiring knowledge, status and honored. (Also see Body’)…
…Holding a thread in one’s hand in a dream means looking for an alibi or a proof to support one’s argument and win a case. Twisting a thread, or tying it around someone neck, then dragging him or her in a dream represents a pimp soliciting clients for a prostitute. Knots in a thread mean sorcery or evil spells. A white thread in a dream represents the dawn, and a black thread represents the night. (Also see Ball of thread | Pimp | Rope | Spool)…
…God’s trust. If one sees a nice bird sitting over his neck in a dream it means benefits or an alibi. If it is not a gentle bird, then it becomes a bad omen, or a rebuke. If one sees a necklace, a rope, a wire, or a thread around his neck in a dream, it means fulfilling one’s promise, acquiring knowledge and honor. A long neck in a dream could mean four things, that is justice, leadership, attainment of one’s goals or calling people to prayers. The left hand represents one’s helper, friend, savings, or a compassionate relative. Longhands in a dream represent a charitable person, or a capable one, and short hands mean the opposite. Long hands also could mean longevity, wealth, helpers, borrowing money, governing, fulfilling one’s commands, profits from one’s business or having business sense. If one’s hand is cut off in a dream, it means…
…over one’s enemy. If one finds his tongue tied in a dream, it means stagnation of his business, or it could mean poverty. If black hair grows over one’s tongue in a dream, it means a fast coming evil. If gray hair grows over one’s tongue in a dream, then it means a slow coming adversity. Hair growing over one’s tongue in a dream also means writing or reciting a poem. One’s tongue in a dream also represents the perfect alibi, the beauty and eloquence of one’s presentation, a professional presentation, good fame and good conduct. If a governor’s tongue is cut off in a dream, it means the death of his interpreter or his speech writer. The human tongue in a dream also represents his pen and his signing authority. If one’s tongue becomes long and reaches the skies in a dream, it means that he will be impeached…
Alibi regarding events about which no one can fool themselves.