yes, and without concern.
yes it is testy and sexy
Inside of his own body is the best place.
Yes it is safe. I do not advise doing that though. It is safe and you can do so if you wish. You cannot give yourself any infection from taking your own semen. Many males masturbate and swallow their own semen. Recent studies have found that consuming human semen reduces depression. You can find an article about that in the related links below.
Yes, semen is mostly water, protein and sugar and is completely harmless. You can't catch anything from your own semen. As to whether you like the taste or not, that is a matter of personal preference.
Alcohol is not present in semen in any significant quantity. If he's drunk, why would.... Oh, never mind.
Consuming your own semen will do you no harm.
Yes
Some people ingest semen during sexual intercourse.
This is your personal option, some have tried this before and some have not.
1/50
Drink a lot of fruit juice
You don't. That's just wrong.