they just completed the hunt and its time to eat
vasodilation occurs which increases blood flow to the periphery and around the body=erection.
no i do and i have a wife
No, it is common in most men who get random erections (erections that occur when there is no sexual physical or mental stimulation) or men who have prolonged sex with no ejaculation.
Some do some dont
They can do yes. These are called spontaneous erections or involuntary erections. They occur when blood suddenly rushes into the penis (erections are caused by blood flow into the penis). It's very common in men when they wake up in the mornings.
Men get boners (or more correctly erections) when they usually see women or if they are gay another man. Women can discharge if they are sexually aroused by looking at a man. During puberty erections may come at unusual times. Mature men generally only get erections when they are sexually aroused. If a man is homosexual, this arousal will be triggered by other men. It's possible that you, on some level, find other men to be sexually attractive. It's also possible that while you were gazing at a man, your mind was thinking about something sexual, whether related to men or women.
yes some men do, but its more of a fetish than the norm
They will eat big fish or men, yum
Physically healthy men experience several prolonged erections during sleep.
Not in standard urination. However, after erections, men often need to urinate, this is a biological function designed to "keep the pipes clean" and free of organic materials.
no they die
drinking vodka and big bottles of wine and beer
It is not necessary to be able to see to get an erection. Did you never have one in the dark?