A group of engineering students and their teacher were given free airplane tickets to go on a holiday.
Once on the plane, the captain announced that they were on the plane the students had built. Everyone freaked and rushed out of the plane, except for the teacher who stayed there with calm.
When the flight attendant asked why he hadn’t left, he responded “I know the abilities of my students. This shit won’t even start”.
Teacher: Everybody, sit down except those who are absolute donkeys or idiots.
All students have sat down, but one remains standing.
Teacher: Are you a donkey or an idiot?
Student: No, sir, it doesn’t look good that you are standing alone, so…