To put this baby to rest. No. I ceiling fan will not support the weight of a human (100-200 lbs. give or take). I'm an electrician and a junction box nailed between studs is what usually holds up ceiling fans. That's no where near the support you need to suspend a human.

On another note. My younger brother was playing Tarzan on the ceiling fan in my parent's bedroom and ripped it out of the ceiling. I think he was about 9 at the time.

So I know as a professional and from experience