Continue to take the penis into your mouth and suck and try out all your various moves until you know the man can't stand anymore and he's going to blast off.

What you do now is between you and your lover. Personally, I like to watch it shoot. It gives me visual images for my wet dreams and besides, it's a thrill to see the spurting cum. It's amazing how much of that stuff comes out and how far it shoots. If you want to watch, you'll feel it coming with your right hand and know when to back off. You can even try to catch some on your tongue if you're fast. You might want to swallow it, some girls do, and lots of guys like to have it swallowed. Be careful to back up a little when it goes off though or you'll gag on it and that's not too romantic. Take it into your mouth and hold it there and then swallow it.

Another solution, and this is a nice one too, unless you're making love where you can't make a mess, is to let the warm, wonderful juices gush into your mouth and then slide around the already wet cock. It make it so slippery and delightful to touch! You'll want to run your hands through it, feeling that hard cock all the way up, smoothing the glistening cum over the knob.