› firstname.lastname@example.org 
During sexual intercourse, what techniques can the woman do with her vagina to make sex feel really good for the man?
Why is this question making me laugh? I'm afraid it might be I'm almost positive it is the indelibly etched sequence from an early South Park episode, the one where Winona Ryder shoots ping-pong balls ... well, maybe you had to have been there. But it's making me laugh, anyway.
So, what can you do with your vagina that doesn't involve ping-pong balls? You do know you don't have to do all that much, right, since the vagina is pretty much already designed evolved to feel good to penises? Unless there is a terrible size mismatch (in either direction, but I was thinking small M/big F), the man is not likely to have too many complaints. Aside from that, oddly, the answer actually is the ping-pong ball trick, or pretty near. Those Patpong ping-pong girls and their sisters, who made that sort of thing famous, were developing their pubococcygeus and associated muscles, doing the famous Kegel exercises. I think Kegels may be overrated they are good for a lot, but the way they get written up you'd think they could reverse global warming, revive Britney Spears' career (well, they might could do that), and figure out what to do about Gaza, all on their own. They can't really do any of those things, but if you develop a whole lotta muscle tone down there, you can perform a modest version of the ping-pong trick and pleasantly surprise a boyfriend. You can add extra lube, you can try that warming stuff, you can play with ice, but mostly what you're going to be doing is squeezing and releasing to various tempos and with varying degrees of pressure. Other than that, I'm afraid there just aren't that many tricks the old girl can get up to. I mean, it can juggle, sort of, and do a good approximation of the squirting-flower joke, but it can't spin plates or do a triple lutz or make an elephant disappear. And if it can make an elephant disappear, I'd really rather not hear about it.
Are there things I can do with my penis that will make sex feel better for my girlfriend? It's good now, but I was wondering what could make it even better.
Well, look at that: a matched set! It's like Noah's ark, where the animals march in by twosies-twosies. What, you never sang that song at camp?
Sure, there are penis tricks, but you have to keep in mind that penises have many more unsatisfied customers than vaginas, so of course they would have to work harder. Unfortunately, most of those unsatisfied customers are not going to be satisfied by any sitting up and begging or rolling over you can teach your penis to do, because they need more and different kinds of stimulation than that sort of tricksiness is ever going to produce. There are a bunch of alignment techniques you can try, all which are aimed at giving her something to rub on your pelvic bone is the best bet. Try a pillow under her butt, for starters. And try doggie-style with as much strong, forward pressure as you can muster. Until such time as your penis sprouts strategically placed knobs and spines, though (I saw that movie!), there is only so much it can do. This is why men (and dildo-wearing partners of whatever sex, come to think of it, although their penises often do sport strategic knobbies and such) frequently use fingers both inside and out, or apply other forms of technology you can get from catalogs. There have always been ringy-things with knobs and loony-looking Seussian things sold as "French ticklers," but the variety and ingenuity of some of the current designs is nothing short of breathtaking and that's just from looking at the pictures.
There's also this fact, which always feels like a faint betrayal of the sisterhood to mention, but since it's the truth and there are options, it's kind of silly not to: lots of women will never come during intercourse, and lots of those don't really mind as long as they get to at some point during the proceedings. So you can work on making it enjoyable/more enjoyable/extremely enjoyable, and your efforts will be appreciated but not necessarily pay off in the way you'd expect. Some women prefer the application of fingers, mouths, or devices (in combo or sequence) before the penis/vagina part, and some after. For some women, intercourse is foreplay. For others it's afterplay all the way. You can't guess, so you'd do well to ask or risk just annoying someone.
Andrea is teaching Sex After Parenthood at Day One Center (www.dayonecenter.com ), Recess (email@example.com ), and privately. Contact her at firstname.lastname@example.org  for more info.