I always have gotten hard during my checkups. Soon as I take off my clothes I get a rock solid erection. I have been seeing the same doctor for almost 10 years first seeing him when I was 19. His genital checks go on for about 5 minutes feeling my dick up and down, squeezing both the shaft and the head, and feeling each testicle and then sort of jiggling them just a second when he finishes. I remember sharing this in another thread, but I was always able to sort of calm myself from shooting, but this one time when his sleeve brushed the head of my dick, I shot a very forceful and big load. It was a big orgasm I felt all over and could not contain from thrusting my hips up when cumming. I am not one to get embarrassed too often, but I was definitely embarrassed it happened and that it made a mess all over and even got on his tie and pants. He kept reassuring me it was fine and these things happen. Which, I did wonder, if he had seen a patient do that before from a genital check, or he was just trying to make me feel at ease. If he did actually see that happen to at least 10 other guys, I'd still feel embarrassed about it. He is a very relaxed guy and easy to talk with about any health questions or to answer fully when he asks about my sex life to gauge my sexual health. After a few minutes I did feel better about it and he joked he never liked that tie anyway so it was his big chance to throw it out.