Teacher: "John, what's the matter? Why are you looking so upset?"
John: "My dad is in police station and my mom is in hospital!"
Teacher: "Oh God! Please go home!"
The principal happened to see John leave. He asks the teacher, "Where's John heading to?"
Teacher: "I permitted him to go home because his dad is in police station and mom is in hospital."
Principal: "His dad is a cop and his mom is a nurse... where else they would be?"
During the final exam, the professor noticed that Billy Walters kept looking at his hand before writing down an answer on his test. This went on throughout the entire exam, leaving the professor no other choice than to interrogate the student's test-taking habit.
"Mr. Walters," the professor began. "Is there something interesting written on your palm?"
"Not at all," Billy replied. "It's all pretty boring."
A teacher was giving a lesson on the circulation of blood. Trying to make the matter clearer, he said: "Now, students, if I stood on my head, the blood, as you know, would run into it, and I should turn red in the face."
"Yes," the pupils said.
"Then why is it that while I am standing upright the blood doesn't run into my feet?"
A little boy shouted, "It's because your feet aren't empty."