A teacher was giving a lesson on the circulation of the blood. Trying to make the matter clearer, she said, Now, class, if I stood on my head, the blood as you know would run into it, and I would turn red in the face.
Yes ,the class said.
Then why is it that while I am standing upright in the ordinary position the blood doesnít run into my feet?
A little fellow shouted, Cause your feet ainít empty like ur head.
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