A group of engineering students built a plane and this is what happened:

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 out
And rushed out of the plane, except for one
Teacher who stayed there calmly. When the
Flight attendant asked why he hadn’t left he
Responded:
“i know the abilities of my student quite well,
This shit won’t even start.”