I parachuted down from a cliff, although even there the risk is slim if you take the safety precautions.
For fun, I decided to spiral down, but that made me fearful for my life for a second.
(In fact, I reckon doing dangerous things is less disturbing to me than is saying things that could hurt social standing or perception. Just the way I am.)
I attended public schools.
I drove on public roads… and continue to do so - harddddcore!
Spending some time in a country with a government monopoly on guns - statistically that’s by far the most dangerous thing you can do.
You BASE jumped? Without any skydiving experience? How high was the cliff?
You realize you are asking a subjective question, no? I have done some safe things that alot of people would describe as dangerous. I decide what is dangerous and safe for me. No one else will tell me otherwise. Such as public affection. I say no more. 
I refused to attend. That is my serious answer.
My joke answer: I was female and had a male partner.