Let's be clear from the start when it comes to giving good head: nothing less than the most thorough working-over will suffice. No half measures. Because there are few things more disenchanting than a decidedly lacklustre cock polish. Guys that reach for your cock with a look of abject *** should be banished. Only the wildest blow job is acceptable. But for this, you require plenty of lubrication, e.g. spit. Imagine you're sucking the chrome off a tailpipe, and you're on the right track.