I have to admit that I had to google what CFNF and CMNF means, then I was like: "Ah, your daily routine."
Being naked (well, now belted) while Master and Mistress (and only them) are fully clothed is a huge turn on for me because it clearly shows my status and there is absolutely no way I can hide my arousal
But I don't think it's humiliating, it should be normal for a sub / pet / slave / ...