A. Dance subtly every day for a year. Everywhere you go 24/7 except when you sleep. Also, every once and a while you let out a loud "Oh yeah, baby!."
B. Whisper perverted things in peoples ears and then say "just kidding" while walking away like you just won a million dollars. (for six months)
C. Tell people you're a professional artist who draws people exclusively and you do work for free. Then draw them as if a three-year-old did and show them while yelling " you just got played" in a squeaky obnoxious voice. (three months)
D. Say the most pretentious smartass things for a month to everyone while talking is a nerd voice wearing overalls and glasses. A funny cookie example would be: "I don't want that cookie, it's cleary overbaked by at least 35.7 seconds and I only eat cookies baked by great chefs. It honestly offends my precious eyes for having to look at something as mediocre a that.
E. Burp loudly everywhere you go and then point and blame someone else for burping loudly and being rude and gross. If they start getting physical say "do you really want to open up this can of strength, if so you better have one hell of a seatbelt nerd!"