Alcohol is not present in semen in any significant quantity. If he's drunk, why would.... Oh, never mind.
That is perfectly normal if you are male. Men are usually turned on by nude things.
Yes! The only birth control for men is the condom. Alcohol has never worked as birth control, quite the contrary.
Women and men should be in control and know the limit of how much they should drink. Saying one is drunk and that's why there was infidelity is a weak excuse.
Consuming your own semen will do you no harm.
It is impossible to do. Females simply can and do not produce semen.
No, they don't.
Nothing. Nothing at all happens when the semen of two men is mixed, whether they are gay or straight.
No.
Drunk people are less likely to use birth control, this goes for men too.
no. most men continue to produce semen through out their life time, well into their seventies and eighties.
Ejaculation in men happens when they are sexually excited. The ejacualted product contains combination of semen and sperm.