I've donated blood 3 times.
The first time I donated blood, I saw another guy pass out when he was about to pick what kind of drink he wanted.
The third time I donated blood, I got stuck with 2 rookie nurses who kept sticking needles in my arm trying to find my vein. The skilled nurse did it right. Then they forgot about me and got more blood than they should. The bag looked like it was about to explode. :Ohno: