
It's a LESSON in context.
The Big Bang Theory Season 4, Episode 20

and every time I hit him,
it's going to be like
a LESSON to myself!
Breaking Bad Season 2, Episode 2

There’s a LESSON early in the morning.
Money Heist Season 1, Episode 5

Maybe it's a good thing we came here.
It's like a LESSON in what not to do.
The Big Bang Theory Season 8, Episode 6

You may be the one in school,
but I'm the one who learned a LESSON.
The Big Bang Theory Season 6, Episode 6