Begin by teasing his inner thighs and lower scrotum with your tongue. Caress the shaft of his penis slowly as you let your tongue work it's way around the base of the scrotum and finally to the base of the shaft. With one long lick, drive your tongue across the shaft from the base to the tip. As you go, let one hand follow by cupping two fingers in an o shape around the base, then sliding after the tongue up the shaft. Imagine removing a condom (though that's not recommended at this point).

Give the tip of the cock one or two good sucks, sliding your tongue aroudn the tip when it's in your mouth. Don't let your teeth touch the penis at all. Next, grab his cock about half way down the shaft and begin pumping his cock towards your mouth. As you're pumping with one hand, reach under and lightly grab his scrotum in the palm of the other hand. Let one finger or two tricle tantalizingly towards the anus.

Let your lips lower slowly over the tip of his penis and onto the shaft. Rhythmically work your tonge around the tip as you move your lips up and down the shaft of his cock from about the 1/3 way to the top all the way to the base of the tip. Keep the tip in your mouth the whole time and roll your tongue back and forth over it. As you get your rhythm going, start sucking harder and harder on the shaft and tip.

Begin to moan and buck in delight when you sense that he's about to cum. As the first bursts hit your throat, increase the intensity until you've pumped every single drop out of him. You've just given the perfect blowjob.