I'm glad they got caught. That will 'teach them a lesson'! [=they will learn that they should not do that again]
We 'learned our lesson' the hard way. [=we learned from an unpleasant experience]
They studied the 'lessons' [='teachings'] of the great philosophers.
(..) Aircraft Bomb-craft I'll be busy son, so you keep the plane clean please. They are $ per hour Consider it a lesson time Pilots never stop to acquire knwledge. You'll make mistakes, everyone does. Never forget, no matter what's happening, to fly the airplane. Absolutely, sir! (..)2016 Sully