TL;DR: Pissing inside the rectum or swallowing urine is not a safe sex practice.
@Exphleb:
Piss is sterile coming out of the body. However, virii can pass from blood to urine.
Urine is not sterile. HIV antibodies are detectable in urine and it is entirely probable the HIV is trasmissible by urine - admittedly lower risk than by blood-blood exposure, but still unsafe.
@MrMazda:
with a suppressed viral load, the only place in which to really find the virus within the human body is within the bone marrow. This is why there are a few bizarre and odd-ball cases where claims have been made that HIV treatment medications have been able to remove the virus from the system if administered early enough. Sadly though, there aren't exactly many people jumping at the chance to experiment with this alleged cure theory for obvious ethical reasons.
In the majority of these cases the virus reemerged and the "cured" peoples' viral loads went back up. And there are very, very, very few cases (single digits) of this cure even having support. Experimental treatments are not uncommon, they're just often unsuccessful and unheard of as a result.
@Exphleb:
If someone tests negative for HIV, good chance they're clean.
annoying buzzer sound
No. The window period of HIV is well established and 5% of positive people will still test negative after 3 months of being infected. With new testing methods we've reduced this to about 6 weeks. That means you can spend 6 weeks positive and infectious without showing up as positive on a test. HIV tests tell you that 3 months ago, you definitely (read: most probably) didn't have the virus. They do not tell you about the present moment, and as soon as you have sex after that day three months before the test, the test becomes irrelevant anyway.
@Exphleb:
Remember, HIV can take 3 months before detection using older systems. Modern tests can get an accurate reading within 24-48 hours after contact.
Modern tests give you a RESULT in 20 minutes. They do not indicate that 48 hours ago you were virus free.
@Exphleb:
The facts have changed dramatically; gays have the lowest percentage of the population who are infected. This number continues to decrease.
@MrMazda:
Actually, this statement is a little misleading. As far back as 2003, the number of heterosexual women with HIV on a GLOBAL scale exceeded that of gay men. That being said however, within North America, the proportions are actually quite different than looking at stats as a whole on a global scale. According to the CDC, within North America, the number of gay men infected with HIV is still substantially higher than that of any other group.
What Mazda said. Globally, 70% of HIV positive people are heterosexual. In developed countries, men who have sex with men still have the highest seropositivity index and often the highest rates of transmission, but not always the highest rate of increase of rate of transmission (the integral).