Boca e chivo
A person who is believed to have a jinx or the power to make things happen just by mentioning them, especially regarding bad luck or negative predictions. (In Dominican folklore, goats are sometimes associated with bad omens or the supernatural).
A: Juan, do not go to La Romana. B: Look, you better listen to him because that guy is a boca e chivo. C: Well, I am not going then.
Automatically translated from Spanish
República Dominicana