One day, in class...

A teacher asks his class, "Is it possible to insert two holes through one hole?"

(crickets chirping)

The teacher finally says, "You guys are so stupid. Go and ask your parents and come back tomorrow with an answer."

The next day, as well, no one was able to answer the question.

The teacher says, "Well, it seems your parents are as stupid as you are. The answer is so simple...", and with that, the teacher makes a circle using his thumb and index finger and keeps it in front of his nostrils.

"See? It was so simple, yet none of you idiots, NOR your equally idiot parents, were 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 seven holes through one hole?"

The teacher scoffs, "No, that's impossible."

"It is possible, my father said."

"How?”

"Take a flute and shove it up your ass."