Is human sperm is safe to drink?

Drinking semen is safe, even very slightly nutritious. Its a bit like raw egg white. And most men prefer women to swallow.

BUT... beware of sexually transmitted diseases, most seriously HIV, but also including Herpes, Syphilis and many more. If you are not really really sure of the person, don't come in contact with his semen. Perform oral sex through a condom - it isn't as nice, but it works.