Jokes - Once upon a time in China

Once upon a time in China, lived two Chinamen. One named I Cum and one named No cum. No cum marry pretty Chinese girl named No cum tu. For very obvious
reasons, No cum and No cum tu do not have any children.

One day, No cum went out of town on business and I cum came over and spent the night with No cum tu.

That night I cum came and No cum tu came too. This made them both very happy. However about 7 or 8 months later, No cum saw he was about to become a father but he do not know how come, so when baby the came, he named it, How cum u cum. Of course, I cum and No cum tu know How cum u cum came but to this day No cum not know how come How cum u cum came!

Cum again ?