My best bud is very straight, but is turned on by showing off his cock. Recently we realized he is turned on by other big dicks, which gives him a raging hard. At first he and I were confused. He loved to show off to me, but we both knew he was straight and didn't want sex with a man (he does occasionally allow a blow job, but always feels terrible afterward for months). While looking at some tumblrs I was showing him about big dicks, he was amazed how turned on he was, looking for someone his size (rarely found). He has told me it is very confusing to him, but he was still turned on. Human sexuality is beyond simple labels. For those who wonder, he is very turned on by showing his cock to gals, too and defiantly identifies as straight. Who knows? Arrogance? Don't think so. Exhibitionist? Definitely. Appreciates other big dicks. Yep. Straight? He thinks so, and really he is the only one that gets to decide.