Synesthesia is a psychological phenomenon in which the stimulation of one sensory modality brings about a response from at least one other modality. There has now been about two centuries of official synesthesia research, yet the current era of study, about the 2000s on, has proven invaluable to our further understanding of how synesthesia works in our perceptive world. I myself have two forms of synesthesia: color-grapheme and lexical-gustatory. In this paper, I look back on my personal experience with synesthesia and review its history and its operational definitions and theories. I then aim to perform a small case study on my synesthesia, using current research to evaluate my observations. I believe synesthesia has the ability to tell us much about perception, subjectivity, language, and consciousness, and I investigate the potential implications that studying synesthesia could have for some of these fields.