Shot 3 times in the stomach

A pregnant woman is in a bank when an armed robber enters the bank and shoots the pregnant woman three times in the stomach. The woman is rushed to hospital where the doctor saves the woman`s life. When the woman leaves hospital she asks the doctor
about her baby, the doctor replies that she is going to have triplets. They`re fine but each one has a bullet lodged in it`s stomach.
"Don`t worry though," says the doctor, "The bullets will pass through their system over the course of time." As time goes on the woman has the triplets - two girls and a boy. Twelve years later, one of the girls comes up to her mother and says "Mummy, I`ve done a very weird thing!".
Her mother asks her what happened and her daughter replies "I passed a bullet into the toilet". The woman comforts her and explains all about the accident at the bank. A few weeks later, her other daughter comes up to her with tears streaming from her eyes.
"Mummy, I`ve done a very weird thing!". The mother says "Let me guess. You passed a bullet into the toilet, right?". The daughter looks up from her teary eyes and says "Yes. How did you know?".
The mother comforts her child and explains about the incident at the bank. A month later the boy comes up and says "Mummy, I`ve done a very bad thing!".
His mother asks, "You passed a bullet into the toilet, right?" The son replies, "No, I was masturbating and I shot the dog."