My favorite suggested safe word is "mercy."
"No" is a bad choice, as is "please."
But the first priority is for everyone to be on the same page. Some people choose not to play games with negative words like "no" or "stop," and that's fine so long as everyone has the same expectations.
I, being the heterosexual man I am, love pussies, and have basically no use for penises (besides my own, but for the most part I'm not *looking* at my own, either). I love watching porn of pussies being played with, and I particularly love girl-on-girl porn:
1. There are twice as many pussies to watch.
2. Women, since they actually have one of their own, know *just* what to do.
Also, when a woman comes, it just seems like a lot more of her is involved, and it lasts for a lot longer. When a guy comes (at least those I have seen in pr0n and speaking from my own experience), it's a build-up that leads to about a millisecond of crescendo that corresponds to the first pulse, and then *poof* it's time for a nap.
Pros for women:
1. Vaginas are just awesome. If I had one, I'm convinced I'd never get out of the house.
2. Women are beautiful. The best you can say about men is that some of them are handsome. "Beautiful" >> "Handsome."
Cons for women:
1. Periods.
2. Bras.
3. Dramatically smaller caloric budget.
Every time I try to open a chat room, I get the system error (500) ASPX page. If I go back to the lobby, it says I joined the room I tried to join. WTF?
I don't like to see women who are just grossly out of proportion. An A cup moving up to a C... that's fine, but a C moving to DD... not so much.
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It hasn't happened to me, at least not completely. I have been uncomfortable and needed to adjust.
But there was an episode of the erstwhile british TV show called Black Books where Manny had had way too much coffee and in a couple of instances where he would sit down on a wooden chair quickly and then groan. The first time, Bernard asked him, "What's wrong?" and Manny paused and then replied, "Sat on meeself."
You probably had to be there.
Mouths are for kissing.
Asses are for spanking.
And that leaves...
My wife just made a calendar as a gift for a friend in iPhoto (it wasn't a *naughty* calendar, though). I don't know if they have any rules about nudity or sexual content, though.
You're certainly going to get better pictures getting them taken professionally. There's sort of a cottage industry springing up for photographers taking pin-up shots of ordinary people to give as gifts. I wouldn't think you'd have any trouble finding one that will do kinky shots too.
In general, I would expect that a VCH would not show unless you really went out of your way.
I am told (though, again, I have no experience), that you can even go through airport security style metal detectors without a VCH setting them off. I pretty regularly go through them wearing my wedding ring, so I can believe it.
Since I'm a man, I'll preface my advice by saying that it's by its nature going to be second-hand at best.
For a woman, I think the most functional piercing is a VCH - Vertical Clitoral Hood - piercing. I've read quite a bit about it, and from what I have read it is universally held to be faster to heal than nipples, and the result more pleasurable. I learned about them initially chatting with a lady here who had one, and have researched them quite a bit since.
I'm.... very, very hetero. I don't really have any use for dicks other than my own. I love getting oral from my girl, but giving oral to another man... no.
A proper spanking isn't really over until she cries, or rather until after she is crying freely. I find it best to start with a warm-up with the hand, and then switch to an implement. I give a few strokes slowly, with a little bit of rubbing between groups, building up until she starts crying. If the spanking is for my own amusement, then I finish with a quick set of hard strokes, and then I'll tell her it's over and gather her up in my arms and comfort her. If the spanking is punitive, then I will order her to count the last group and then order her into the corner for her corner time (nude, with her hands behind her head). When her corner time is over, then I hold her and assure her she is forgiven for whatever the transgression was.