His belt buckle appears to spell out the name "Chuck." Then again it might say "fuck" or "Buick." (Click here for a much larger size version of the same photo.)
This looks familiar to me, and I may have even once had the vintage magazine where this originally appeared. Sadly, my vintage smut collection was destroyed in a fire some years back, so I no longer have my home stroke library.
I'd like to search for the complete set, if one exists, but need a full name for the lad to do that. Unfortunately, because this is a black-and-white photo, Google's image search function will not work (it only works for color pictures).
If you know his full name, please reply in the comments. With a name, and if I find more photos, I will post them here. Thanks!