"Jerking Off" joke

A women was pregnant with triplets.

One day she goes into this bank as it was being held up. She gets shot 3 times in her stomach, but luckily she lives.

She goes to the doctor who tells her her children will be all right, one day the bullets will come out.

So 13 years later, one triplet, a girl, runs out of the bathroom and says "MOM, MOM, I WAS GOING TO THE BATHROOM AND A BULLET CAME OUT!" So the mother tells her the story.

The next day the second daughter comes out and says the same thing, "MOM, I WAS GOING TO THE BATHOOM AND A BULLET CAME OUT!"

On the third day the son comes out and says "MOM, MOM!" she goes "Let me guess, you were going to the bathroom and a bullet came out?" he replies "No, I was jerking off and I shot the dog!"