So I'm kinda crazy...

Convincing someone else of your insanity would be an exciting, fun, and easy endeavor. There are so many non-normal things that classify someone as insane, that even were that person to act normal again, they would still be regarded as crazy. To be most effective, I would probably start off small. I'd begin to spend money on seemingly inconsequential things that didn't align at all with my personality, and I'd often squirrel it away into strange places with treasure maps leading me to it. I'd also add some strange twitches to my physical appearance. I'd also begin to be more lackadaisical about my personal hygiene and appearance. I would forgo showers, leave my hair in a mess, have bad breath, and sport wild red eyes. I would twitch and jerk at the smallest sounds, and do the same for some imaginary sounds. Then I would begin to talk to inanimate objects. At first I would only speak to them, as if they didn't respond, but then I would begin to have conversations with them. Anytime that I saw a lawn flamingo or gnome, I would squat down in front of it and go off in great length about the meaning of life, or the great depths of literature, until the concerned owner chased me away. I'd make sure that I would always appear disheveled and confused in front of my victim and I'd often act as if they didn't exist, or that if they did, they were not important, and my conversations with trees, plants, and dogs was much more interesting. I would often speak gibberish in public, and scratch myself in places deemed un-appropriate. Once the person was fairly convinced that I was insane, or at least travelling on that path I would begin to have long strange stretches of silence, and imitate the effects of schizophrenia as seen in "A Beautiful Mind". I would try my hardest to convince my friend that he or she wasn't real and neither was I, and I'd try to convince them that because of this we could fly, and do other impossible tasks, like lift buildings. I would jump out of short windows with feathers taped to my arms, and lift lego structures all day long. Though for a while this task could be quite fun and amusing, I am not sure what I would do after my friend was sure I was insane. I would hope that they did not consign me to an asylum, and that I would one day be able to convince them once again of my sanity.