Nobody is able to answer
Teacher: "You guys are so stupid. Go and ask your parents and come back tomorrow with an answer."
The next day too, nobody is able to answer the question.
Teacher: "Well, it seems your parents are stupid as well. See the answer is so simple."
Then the teacher makes a circle using his thumb and index finger and keeps it in front of his nostrils.
Teacher: "See, it was so simple, yet nobody was able to answer."
The next day, a student comes up to the teacher and says, "Sir, my father has asked if it's possible to insert 7 holes through one hole?"
Teacher: "No, that's impossible."
Students: "It is possible, my father said."
Teacher: "How?"
Student:
Spoiler:
