A young married couple has difficulties conceiving a baby,

A young married couple has difficulties conceiving a baby, so after a while
the wife consults her doctor, who recommends the minor of 3 possible
operations. The operation is performed, but a month later, she's still not
pregnant, so she goes to see the doctor again. This time he recommends the
medium operation, a somewhat more serious operation, but still not as
complicated as the 3rd alternative. But there's still no result, and another
month later she's back in the doctors office, and this time she gets the big
one. After having recovered in some weeks, the couple resumes normal marital
activities, and this time they actually succeed in conceiving a baby. Filled
with joy, the young wife now see's the doctor for the regular examination
during pregnancy: "We're so happy doctor, we're finally having a baby. But
what was this 3rd operation actually all about? the first two weren't that
bad, but this last one I think must have been quite a job, I was dizzy for
weeks after?" "Well" the doctor replies, "Since the first two standard
operations failed, we started suspecting your methods, rather than your
ability, so I made a connection from your throat to your uterus!"