A UTI is a urinary tract infection, and it is not a sexually transmitted disease or infection. However it can be related to sexual activity. UTI's tend to happen more frequently in women, and that's partly because of women's anatomy and the way they're built. So the vulva, the outside of the vagina, has the opening to the vaginal canal and then underneath it is the opening to the urethra. If something is penetrating the vagina penis, fingers, anus and it's not necessarily clean, there's some bacteria, the bacteria actually can get pushed into the urethra. And that's actually what will cause the infection. So although that's not sexually transmitted, the sexual activity can lead to the urinary tract infection. They can be treated with antibiotics and cured. Men can also get urinary tract infections. They tend to be less common, but they also can happen. And it's the same thing; it's due to bacteria being pushed into the urethra. So again, although they're not sexually transmitted they can be sexually related.