From January to October, Mariah Carey is completely harmless and does not pose any threat. However, from November 1 on wards, Mariah Carey begins to sing her most popular song, All I want for Christmas is you. This song is an extremely Cognitohazard/Memeatic Hazard, and is extremely dangerous to all that here it. On Christmas day, 25 December, Mariah Carey is at her most powerful. She also grows in physical strength, being able to knock over metal walls with ease. Come January first she loses all power. The song 'ALL i want for Christmas is you', infects all that hear it with Christmas Spirit synonym. These people become extremely erratic, thinking everything must be seasonal themed and will go to any length to put up Christmas decorations. As it so happens, infected people think that human blood is the most festive shade of red and will often rip others apart the acquire blood to decorate. They will also swear up and down that Christmas movies are peak fiction.

Containment Procedure: From January through to October. Mariah Carey is considered in the Safe Class and is kept in a standard containment cell. However, come November first, she is to be sealed in a sound proof chamber and frozen in dry ice. Over the occurs of November and December she will deforms and thus the camber must be kept frozen at all times

You are an employ at the station where she is contained. And she has escaped!

I couln't find this song on sound cloud so check it out HERE