Just let it go! You don't need to feel guilty or strange, and therefore having to explain. I told my daughter- who told her friends who all thought it was interesting- bc there isn't anyone over age 7 who isn't aware that some men dress for various reasons, and it is all deep and kind of taboo- but harmless of itself. I felt I had to explain and she would wonder and ..and... but quickly realized that children are breaking away from parents for decades, and every year past maybe age 10 they become increasingly aware that we are real people with various faults, good points, and frailties, and they barely have time for managing their own lives against all challenges. So unless we are going off a cliff and they want to save us, they would just as soon not get involved. They pick up a thousand clues about us whenever they see us but they figure we each have our lives to live.
Consider you actually could just be more explicit and say- oh son- I do love to crossdress at home, and if it doesn't make you uncomfortable I'd like to be free to do that when you are visiting. I ended up realizing that since I live a double life, my relationship with my daughter works better when I am in familiar dad typical male mode. We are who we are in the present moment with kids. They remember everything we did, but the present moment is the way we shoe them how we want to have a good relationship in the present.
