Dear Hairdog, not that I'd ever want to dampen your enthusiasm, or be seen as critical of your technique... but in my experience I'd rather a man stop before my head actually caves in. Don't stop TOO soon, but really, those caved in heads tend to make you feel bad about your appearance for days.
LOL
I'm with you on this one 2ndC. In addition to the "head caving in" imagery not being too tasteful, the whole scenario lacks credibility IMO. If Mrs.HD is standing up in the shower and HD is performing the above-mentioned action, how will he be able to avoid getting water up his nose. Also, since HD is significantly taller than Mrs.HD, I don't believe that simply kneeling would get his face low enough to achieve this result. Finally, in my experience it is somewhat difficult to orgasm at all while standing on a slick surface supporting you own weight, let alone achieving the "head cave" level of experience. Therefore, I feel that this fantasy must be relegated to the category of "Nice in theory. Real life failure.".
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver
