As a child I was examined many times by female pediatrician & my mother (MD) for a varicocele, had hernia surgery with female nurse prepping me. I was frequently aroused during the procedures, hence my fetish with procedures where a female sees me naked and touches me. I didn't realize that I had a fetish for what we now call CFNM, clothed female naked male.
When I needed a foley catheter for post op urinary retention, I was in my 20's and an aide--not RN--looking even younger than I came into my room with the equipment. She said the doctor ordered a catheter. ‘Have you had a catheter before?’ no “I'm going to put a tube into your bladder, through your penis.” I gasped. She smiled and continued, “Yeah. Most guys are shocked when they hear that. I'm the designated catheter nurse. I've done over a hundred, and it's not painful. I use an anesthetic. There's some pushing and funny sensations.” She exposed me, and took a couple minutes to prepare the tray, catheter, bed bag, glove up and put the drape on me. I was both aroused and embarrassed that I started to erect, and became fully erect when she touched me and swabbed the head of my penis. She smoothly re-assured me that many men get erections when they are touched involuntarily. She injected the lidocaine jelly, allowed some to flow onto the skin, then squeezed and held the end of my penis, explaining she had to hold in the jelly to let it take effect. She asked me what work I did, what I did for fun. It was so weird, chatting with a young woman as if we were meeting at a bar, but she was holding my dick! The lidocaine on the skin deadened it so I couldn't feel her fingers on my penis, but I stayed erect. She explained that tube would go through the lowerer soft part of my penis, and the hardness did not affect the insertion. The actual insertion was painless, although the pressing and dilation of the parts felt weird. The urine poured into the tray as soon as the catheter hit the bladder. Some how she attached the drain tube. The relief of the pressure was immediate! She didn't cover me up as she tore the drape and removed it, cleaned up the tray. She positioned the tubing to the side of my body. Lastly she said she'd come back when my penis softened, and would tape the catheter to the side of my body.
The next morning for the bed bath the aide carefully wiped off the brown betadine, and put a little ointment on the end of my penis so the tube wasn't dragging on and irritating the skin around the hole. Finally another female nurse exposed me to removed the catheter the day after.
The erotic recall was so intense I wanted to act out the event. I figured out how to catheterize myself. I got into self cath heavily, trying different kinds and sizes, leg bags, night bed bags, extended wearing. It was an inexpensive hobby. Insertion kit under $4; catheter under $2, leg bag-reusable-$6. What's a movie cost? Arousal: Some readers think you can't ejaculate with a catheter in. I've done it often.
Fetishes come and go. I did it for over 15 years. My biggie is full time crossdressing. Wearing a catheter under women's clothes doesn't work.