The thing that I spend most of my time doing with couples is getting them to communicate, real-time, in bed. Women vary tremendously in the amount of vaginal lubrication they produce, and the amount even changes during their monthly cycle. Most women don't expell much lubrication during orgasm, but some do. Lubrication is also not a reliable indicator of level or arousal. Some times seman and vaginal fluids pool at the base of the cervix, and during orgasm the fluids are expelled.
People can have foot fetishes, leather fetishes, etc.
For example, in South Pacific islands where women commonly went around topless the breast was considered a minor sexual orgam. I usually recommend backing off of both of them for a brief time to get your head and heart straight. There is a medical procedure for increasing penis size, but I have heard very little about it. I can't remember an embarrassing question. There may have been one many years ago, but I've forgotten it.