Adjective. One who is attracted to neither gender, and instead partakes in chronic masturbation
From the Latin prefix "idios", meaning "one's own".
Chris: "Dude you coming out tonight? Pick up some chicks?"
Danny: "Nah i'm ok"
Chris: "What about a gay bar, if that's what you're into?"
Danny: "I'm good thanks"
Chris: "Dude, you're such a idiosexual"
Danny: "You're putting me off here. Fap fap fap fap fap fap fap"