"Low iron? What do you mean? I haven't had a problem with that since I was little, and a few Flintstones vitamins cleared it right up."
"Are you on your period?"
Grr. Two painful finger pricks (why do those motherfuckers hurt so bad) and nothing to show for it. I admit that I give blood for two reasons: 1) it helps people and 2) it makes me feel good about myself. Yeah, it's selfish, but I get my happiness where I can. Even the Red Cross van.
And I didn't even feel tired until they told me I have low iron. After that I was pooped.