Usually the blokes on that site are quite banal and the blindfolded blowjob routine has few variations. This young buck shown here, however, is an exception. The slight look of terror in his face provides a nice counterpoint to his half-hard cock, with the tip of the head just peeking out of his waistband -- if you click the pictures, you can see them in a much larger size.
His anxious expression suggests he's just now realizing what he's gotten himself into, yet he's also excited that he may be crossing a new sexual frontier. His his just about to lose his virginity, to have his first sexual experience with another person of either gender?
I find the combination of power and helplessness very intoxicating. He's a big, strong lad with powerful muscles but he's now submissive and bound. That is a trust which must not be abused, although that doesn't mean it can't be pushed a little further to the edge. He knows he has a need for submission and now is willing to pay the price for that need.