I can relate to your feelings of disgust and shock OP. I'm scared of posting this just in case I'm outed and I've changed username. But I need to tell someone who doesn't know me/my parents to get a grip of my feelings.
@Summerhillsquare and @Rainallnight agree with you too.
a few years ago, my parents both in their 80s had to start sleeping separately due to severe medical issues for DM. A year ago, DF went out for the day so I stayed to look after DM and whilst at their home, the carers asked for me to find her dressing gown as they couldn't find it. I eventually found it; it had been used by DF to cover over his porn stash. At first glance I didn't think much of it but then picked up one of the DVD's and found that it was Trans porn. Men that had boobs and their full tackle. I was a little stunned tbf!
Since then, DF had to go to hospital and I had to pack a bag for him, in a rush whilst paramedics were waiting to take him in. I was flinging open wardrobe doors, pulling out drawers, rummaging in cupboards in his bedroom to locate clothing and underwear items to pack. I came across quite a few things that showed that my DF dressed up as a woman, including fake nails, fake eyelashes, makeup, shaved legs, 4 inch fuck me shoes, wigs plus stacks of Trans-porn. All in full view if one opened a cupboard or pulled open a drawer. All this whilst panicking to get him into the ambulance as he was seriously ill. I couldn't look him in the eyes. I've recently seen remnants of nail polish on his nails and mascara around his eyes. so he dresses up as a woman and watches Trans women porn.
Every time I hug him hello or goodbye, I feel very sick. My DM is the most prudish woman you could ever come across. DF is the kind of man who sneers at Trans people, doesn't 'understand' gay people and people would believe him to be a real 'man's man' IYKWIM.
So yeah, try telling me not to be prudish on that find!!