Lesson on Opportunity Cost: Professor Gatemouth

I think blues guitarist Clarence Gatemouth Brown understood opportunity cost, based on his song "My Time is Expensive." Here are the lyrics:

My time is expensive, baby.
I'm tryin' to make it last.
My time is expensive, baby.
I'm tryin' to make it last.
If we're going to get together,
We better do it fast.

Listen yoself here: My Time is Expensive by Clarence Gatemouth Brown, R.I.P.