Could be as simple as diet or yeast infection (female) in which case a quick deuche will knock it out.
no unless your like drinking it
Usually concentrated because of dehydration
Sperm can't come out through urine. Even if it could, you wouldn't be able to catch it from a toilet.
Aids
Grunt crap, Elite urine, sweaty brute.
This could mean you have Swine Flu or Aids. You'd better get this checked out.
Yes, but not all transmit aids.
AIDS (HIV infection) is not spread via casual contact, sweat, feces, tears, vomit, urine, or saliva.
As adh aids in the reabsorbtion of water in the kidneys urine becomes more concentrated so urine becomes darker.
Urethra, or if you mean something that aids in getting urine out of the body, it would be a catheter.
No, you can not contract HIV by urination.