"Big White Room" by Jessie J is a song about feeling trapped and isolated in a difficult situation. The lyrics describe the protagonist sitting alone in a big white room, feeling scared, broken, and wanting to escape. They long to be somewhere else, where they can feel normal and free like they used to be. The protagonist feels like they are losing their mind and going crazy in this confined space. They try to stay strong but are overwhelmed by pain and sickness. They yearn to run and feel their body again, but they have no choice but to remain in this big white room where nobody else seems to care about their struggles. The song speaks to the feeling of being misunderstood and ignored by others who are looking and staring without offering any help or support. Despite the difficult circumstances, the protagonist is encouraged to put on a smile and continue facing the challenges. Overall, "Big White Room" portrays the emotions of isolation, desperation, and longing for escape. It explores the internal struggles and vulnerability of the protagonist in a confined space, where they feel disconnected from the outside world.