[QUOTE=Kevin80;5755034]Your math is way off. Where did you get your stats?[/QUOTE]I'm an expert level statistician, dude. You can look up the chances of getting an STD on CDC's website and many other places. The. 04 may not be exactly correct. I didn't research it heavily. But I know it's pretty small. Say it's. 04% or. 1% or whatever. If you do it twice you don't double your odds. If you do it 100 times you aren't 100 x more likely to catch something. They are isolated incidents, so each time you do it you have the same chance of catching something that you did the last time you did it. The fact that you banged one provider unprotected this week and chose to bang a completely different provider unprotected next week are completely unrelated events.
Now. It's obvious that the more you do it the more your chances, but the fact that you did it twice in 2 weeks doesn't double your odds. If you indulge 100 times per year your chances of catching something are definitely something non-negligible. If you assumed each time equally increased your chances, and your chance from any one incident is. 04%, then by that logic your chance would be 4% if you did it 100 times. But in reality it's something less than 4% because the odds don't add up like that. Just like buying a lotto ticket this week doesn't increase your chances of winning next week. Your chances of winning the lotto are obviously higher, but still pretty small. Now in the case of STDs you're talking one in thousands instead of one in hundreds of millions, so we're talking on a completely different scale here, but still the chances are fairly small.
All that being said, I still wouldn't risk it personally. It's a non-zero chance of catching something that could potentially ruin your life. I just wouldn't say that it's a near certainty that you caught something if you ever did it even once. It's far from that.