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.
The teacher then asked, "then why is it that while I am standing upright in the ordinary position the blood doesn't run into my feet?"
A little fellow in the back shouted, " Cause your feet ain't empty."
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.
The teacher then asked, "then why is it that while I am standing upright in the ordinary position the blood doesn't run into my feet?"
A little fellow in the back shouted, " Cause your feet ain't empty."
