One day, all the teaching colleagues of Dr. Flip got into a plane to fly to a conference.
The pilot came online and announced, “You will be delighted to know that all the work on building this plane has been done by your own students!”
Immediately, there was a mad scramble and all the teachers got off the plane before the air hostess could understand a thing.
Dr, Flip, however, remained calmly seated and in fact, opened the morning paper and started reading it.
“You must trust your students an awful lot, Prof!” The pilot could barely hide his admiration.
“Oh yes! Absolutely!” Flip replied, “If my students built it, this plane isn’t going anywhere.”