If a guy has a big meal, 20% of the blood in his body heads for the digestion system, and therefore his erection can't be "pulsing hot" no matter how horny he might pretend to be. If you drink too much alcohol, the erections drops off even more.
If you sneak a look at another guy's penis in the locker rooms, the size will depend on what he is thinking about, whether he has done an energetic workout, how long since he last had an ejaculation, the amount of food in his stomach, how tired he is, and of course, the angle you look from. (you mostly get a false reading).
Your penis will appear smaller than the guy you sneak a look at because the angle of viewing makes yours seem much smaller than it really is.
But if your cock is 8 or more healthy inches, you should parade it around to let other guys feel like volunteering their Mrs to meeting the needs of visiting Bulls.
If your wife loves fantasies about sex with other men, then you could offer her that gift on each of her birthdays. It can be her decision whether one bull or a trio of bulls will do the trick.