Guaranteed to faint

I had to go to the hospital today to get a blood test. Every time I get a blood test, I pass out guaranteed.

I once passed out as the blood squirted out of my arm, knocked my head on a plug on the wall, and fell onto the floor unconscious. The doctor's surgery had to move the room around because of me.. as they should!

This time I apparently passed out with my eyes wide open and had huge dilated pupils.