Worried you don't know that semen is comprised of protein, citric acid, fructose, sodium chloride, ammonia, ascorbic acid, calcium and cholesterol, and other chemicals and minerals? Don't be. Dr. Susan Block returns in the sixth volume of her series from her radio/TV/Internet talk show spouting almost every pertinent fact about fellatio you can think to ask. Block and her studio guests offer their thoughts on topics such as "How to Handle a Big One," "Thou Shalt Swallow," and "The Power to Give Pleasure," along with personal recollections of blowjobs past. Block's intellectual approach contrasts amusingly with the much coarser style of co-host Donni (who's evidently Block's daughter).

The softcore visuals in Block's trademark stuttering/strobing effect may irritate some viewers.