Hi Sunray Shower,
That's ok. In fact, this joke remainded me one story from the
university, where I was studying. One professor there was examining one
of his students. He wanted to give him "B" for his performance,
but that student wanted "A": "Hey c'mon, professor, I answered all of
your questions. I wanna "A"..:-) He said. That professor was thinking
for a while and answered: "All right, if you'll figure out how many
light bulbs are in this room, I give you an "A". That's easy, said that
student. There are 4 light bulbs in this room. So are you gonna give me
an "A"? No that's wrong, said professor and took out fifth light bulb
hidden in his table. There are five bulbs in this
room...sorry...Next...:-). That joke is very similar to this story.
Everyone is choosing from that three options. But they're forgeting
that the most easiest way to empty that bath-tub is just pull out the
plug...:-)). This forms an point of this joke. Like I said, it was a
trap from that doctor.
Best Regards
JCD