In this chapter of the Phasmophobia guide, you will find out if saying "Bloody Mary" has any consequences.
All the ghosts that you can meet in Phasmophobia have are programmed to listen to what the players are saying, and if they hear a specific word or phrase they can react to it and, for example, increase their activity or attack the player character. Among the many words and phrases, you can also find Bloody Mary.
Have you ever heard of the terrible consequences of saying Bloody Mary three times to the mirror? Even if it doesn't work in real life, in Phasmophobia it really does!
Bloody Mary is one of the phrases that in Phasmophobia especially affect the ghost and greatly increase their activity, but you need to be close to them to get a reaction. Some ghosts will react softly to the provocations and, for example, fill a sink with dirty water or write something in a book, but others can get angry and immediately go to the hunt phase.
Remember that playing at the Amateur or Intermediate difficulty level, you start with the setup phase, in which the spirits won't attack you. For Bloody Mary to work, you have to start the actual game.