Q: "what's the height of rejection?"
A: "while you're doing it, your hand falls asleep"
A. Honk in traffic? Once a month? week? day? hourly? (I used to at least weekly, more like two-three times per week).
B. Have "sex with yourself?" Yes, that. (I'm still rather active, here, but, well, won't say...)
C. Talk to the Television, out loud, in front of 'normal' people. (I do that, but mostly with sdverts,
D. Thump an appliance, trying to get it to work, or speed up, or whatever needs doing, through vibration or something, when you have no expectation that doing so will help anything along. It's what we do, when faced with malfunctioning machines - Hit them, that'll teach 'em a lesson, they'll fly right after that. (Yes, guilty here too, often. Least twice a week.
E. Look for interesting stuff on the ground, whilst walking.
F. Shout out loud when in pain, if no one is around? (I don't do this as often as I used to, now only every three week, on avg.)