Bosessed Share definition Flag girls that think they can spell, but end up not being able to and trying to make a word out of it are Bosessed. That girl Victoria is completely Bosessed, she spelled obsessed wrong, and tried making it a word. Bosessed by Shakejuntmann June 2, 2011 0 0 Get merch Get the Bosessed mug. Buy Now — $32.95 See more merch