Nothing. In fact, I have read many journals posted by many physicians which state that semen is very, very good for the lower digestive tract, and surprisingly, the heart. Although it packs a whopping 240 calories per serving (8 oz), none of these are empty calories. The protein in semen somehow (it's being researched) provides extra strength to the heart muscles. As for the lower digestive tract (large intestine, colon, etc) it contains a lot of fiber, and the sperm cells help prevent disease.
If you swallow your own semen, then no, you can't get anything new. It's quite safe. It's fairly safe, too, to swallow someone else's semen.
No. When you swallow the semen, it goes to stomach and digested. Sputum comes from your lungs.
no good mon
After all there is no harm in swallowing your partners semen.
yes
If a woman drinks sperm, from my knowledge, nothing bad will happen. Some girls do not like the taste but others do. But nothing will happen
The same as anything else you digest
if you want
It depends on the race. Some grant super-human abilities, but others simply taste salty.
you can swallow the semen. yes, some people do it because it is a "turn on".
Clearly, yes.
no