Honestly, not that far off from when I injured my bladder and had to do a flow study. Stood on two wooden boxes, straddling a small pool/large bucket, with some catheter monstrosity up my urethra, and a probe up my ass. The three specialists and one technician apparently had to visually detect my muscle movement, so I was full-on naked. Then, they pumped water into my bladder and told me to tell them when I felt full. Then they made me push the water back out, and then they did it again a couple of times. At one point, they told me to try to not poop while they performed the study because it could mess things up. I lost what little remained of my inhibition that day.