When I was in the hospital the medical technician (phlebotomist) put a needle in my cock shaft. She tapped on my shaft and said that’s a nice vein, I’d like to put a needle in there.
She felt and prodded the vein going up and down my shaft. She put a tourniquet around my shaft and balls and said, ‘Oh that’s better’. Then she grabbed the shaft and stuck the needle in. She pushed it in deep and wriggled it causing extra pain. She popped a tube on the end and drew blood out of my cock. Then she left the needle in so she had a port to draw more blood.