I just got done posting about the latest Jackass movie. To my knowledge, all of these guys are straight -- and their dicks are their favorite thing to talk about. There is a scene in this movie where Johnny Knoxville says that a bullet looks like Bam Margera's dick, and he tells Bam to pull his dick out to compare. Bam complies.
http://www.lpsg.org/71588-side-knoxville-i-didn-t.html
I believe that everyone has at least some interest in their own gender, and I read an article a while ago that said that the Internet has allowed for some men to explore this. I use the label "100% Straight" as a way of saying that I am not interested in sexual come-ons from other men. I'm not interested in erotic same sex stories about men, etc. But I ultimately think labels fail to describe what goes on inside of each person.
The argument could be made, for example, that you are bisexual -- because you were married to a woman.
Bottom line, you seem to be working on the assumption that straight men aren't interested in the penis, which I think is completely incorrect. Straight men are probably more interested in cock than any other segment of society. (I remember hearing about a game that HS football jocks used to play on the bus. When one of the guys fell asleep, the other guys pulled out their cocks and hit the sleeping guy in the face with their cocks.)
And you may be reading your own story of attempting to deny your own urges into the rest of us. I'm denying nothing. I enjoy knowing that other guys have what I have and experience what I experience, but I don't want to fuck them, be fucked by them, or have them come on to me sexually.
1. You're assuming that straight men aren't interested in cock. (Wrong, in my opinion.)
2. You're reading your own story in to us. I don't have a stack of Playgirls that I hide. (I have a stack of straight porn videos that I hide, lol.)