I don't so much have a question as I want tips on how to give better cunnilingus.
For starters, don't listen to your male friends. Secondly, don't believe all the fuss about the alphabet technique or the counting trick. If you haven't heard of them, these techniques are based on either "writing" letters or drawing the numbers from 1 to 50 or some random number with your tongue. That seems like a good idea - it gives you variety and a way to keep paying attention for a decent length of time. However, as good as that feels, you can very easily double or triple the pleasure.
If you consider even the simplest anatomical aspects of the vulva, you can figure out a lot of the best methods. We all know what labia look like, and, given that configuration, the technique is easily derived. Trace the contours, especially the point, and vary between short and long strokes. The area nearest the opening of the vagina is easily the most sensitive. That said, tongue penetration, shallow or more enthusiastic, is virtually guaranteed to garner some significant praise.
Don't be afraid to be a little rougher with the clitoris, though (light) biting should only be attempted if she shows an inclination toward pain for pleasure.
Last tip: never tell a girl she tastes bad or acidic or anything else negative. A lot of girls are insecure about getting eaten out, so be nice.
Could you tell me more about the supposed nutritional value of semen? Some call it a "protein shake."
Well I wouldn't base an exercise regimen on a diet of blow jobs. The "ingredients" of semen are sperm, sugar, water, vitamin C, enzymes, proteins, basic buffers and zinc. And since each ejaculation is between a quarter teaspoon and a teaspoon and a half, you'd have to be ingesting more than two gallons to get any nutritional value.
So yes, there's protein in semen, but not enough to constitute actual sustenance.
How can I stimulate my boyfriend's prostate?
You have two options: the "one in the stink" and a more external technique. For penetration, make sure you use lubrication. You may also want to consider using gloves or finger condoms.
The best method is similar to how you would stimulate a girl's G-spot. Locate the button-like area, and make a "come hither" motion with your finger(s), curling toward his stomach.
The lesser-known method doesn't involve any anal penetration. If done properly it can have the same effect. The key is to put pressure on the perineum, which is the skin between the testicles and the anus. Best plan is to use your thumb or a finger or two to press lightly and watch and listen for cues about how much harder he'd like you to go. It's also important to either make out while you're doing this or to do it during a blow job. If it is during a blow job, press a bit harder right before orgasm, and maybe you'll get an orgasm multiplier.
I know a guy with a small penis. What should he do, hypothetically? Focus on the clit while he's doing a chick? It's not me, I swear.
He could focus on the clit, sure. He could also try supplementing, and I don't mean with pills or pumps. I don't really encourage this kind of cheating, but he should consider adding a finger or two. As I've already mentioned, the outermost third of the vagina is the most innervated. That said, the extra girth there can help more than length.