What can happen to a person if they drink another persons urine?

I would imagine they might throw up.

I haven't heard of anything bad happening.

Well, just from what I see on the television programs where people do gross things.

I found this link and thought maybe it would answer some of your questions... I would think that germs and infection might be previlent..

drinking another person's urine - Google Search (http://www.google.com/search?hl=en&rlz=1T4GGLL_enUS308US308&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=drinking+another+person%27s+urine&spell=1)