My wife want to have anal, before i jump into i wanna know . is it a dangerous for both of us or safe ? can she or i get any disease?

Let me think...: Just like in any big city, some streets are one-way and some streets are two-way. A vagina is created or evolved to be a two-way street (penis in, baby out). However, the gastrointestinal tract is designed to be one-way, with an opening on each end. Food goes in the mouth, and the brown stuff goes out the butt. The exception is when one vomits what the body thinks is bad or toxic for the stomach.