Like a lot of well endowed men, I've got a thing for showing off at the urinal. I'm 100% straight but I love to show off as well as visually compare with other guys when showering at the gym or standing at an open urinal. One thing I especially enjoy is comparing with a guy who has a wife/girlfriend waiting for him outside (and when my wife is present outside as well). My wife always likes to hear about these encounters and who wins. In my mind, I imagine screwing another guys...
Competing Over Women at the Urinal
Competing Over Women at the Urinal