You can always crop it some more to make it less easy to identify... Say from the waist down only... Sometimes scenery can be a giveaway.
I'm not super impressed, but he is indeed a hot guy though. His pants may be on tight, and thus accentuating the bulge. A bulk of the bulge may be his balls... And he's probably wearing briefs.
I have a co-worker that loves skinny jeans and tight pants... Walks around with a bulge like that all the time. However, I don't get the feeling that he's packing.