The teacher of the earth science class was lecturing on map reading.
After explaining about latitude, longitude, degrees and minutes the teacher asked, "Suppose I asked you to meet me for lunch at 23 degrees, 4 minutes north latitude and 45 degrees, 15 minutes east longitude?"
After a confused silence, a voice volunteered, "I guess you'd be eating alone."
A lecturer teaching medicine was giving a classoom observation. He took out a jar of yellow liquid. "This," he explained, "is urine. To be a doctor, you have to be observant of color, smell, sight, and taste."
After saying so, he dipped his finger into the jar and put it into his mouth. His class watched in amazement, most in disgust. But being the good students that they were, the jar was passed, and one by one, they dipped their finger into the jar and put it into their mouths.
After the last student was done, the lecturer shook his head. "If any of you had been observant, you would have noticed that I put my second finger into the jar and my third finger into my mouth."
The teacher of the earth science class was lecturing on map reading.
One day, Little Johnny's teacher, Miss Figpot asked the class if they could name some things you can suck!"
Physics Teacher: "Isaac Newton was sitting under a tree when an apple fell on his head and he discovered gravity. Isn't that wonderful?"