Some of us can't help showing...even if it's not completely sticking out, you can still see it somewhat.
I posted once about this coworker of mine who has a really hot bulge - you can totally see it when he's walking around the office, or especially when he's sitting in meetings...legs apart. It's almost like he know he has an impressive bulge and loves to make it really visible. As my earlier post on this subject stated, sadly, I believe it to be all balls (lol).
What I find funny is how my female coworkers react to this. I was having drinks with a few of my coworkers a few months ago, and the subject of our coworkers bulge came up (no pun intended). They thought it was really gross - not because they thought the idea of showing a bulge was gross, but because they did not find him to be sexually attractive whatsoever. So to them, his bulge was gross. When I probed (haha) further, they admitted they have no probs with visible bulge, but it all depends on the dude sporting it. Interesting...