And I know this happens because I took economics, and I’d explain it to ya, but I flunked that course. Not my fault. They taught it at 8 o’clock in the morning. And there is absolutely nothing you can learn out of one bloodshot eye.

In this bit, Black uses self-deprecation and exaggeration to mock both his own youthful irresponsibility and the way people invoke “I took economics” as a badge of authority. The punchline—learning through “one bloodshot eye”—turns a mundane excuse (an 8 a.m. class) into a vivid image of hangover fatigue, suggesting that institutional schedules and human behavior are comically mismatched. The joke also satirizes the tendency to rationalize failure (“Not my fault”) and hints at a broader theme in Black’s comedy: skepticism toward supposedly rational systems (like economics) when filtered through messy, real human lives.