The Teacher Talked To The Students.

Teacher: He brings two buckets into the class, one filled with water and the other filled with Beer.

Then he brings a donkey to drink.

The donkey smells both buckets and decides to drink water.

Then he asked his learners what have they learned about the lesson.

Little Johnny raises his hand.

Teacher: Tell them, my boy.

Little Johnny:

I learned that a person who does not drink alcohol is a donkey