80% of the public is dumber than a box of rocks
& growing by the day
I'm just barely in the 20%
Almost 50% of the population is below average intelligence.
Technically, they are below the mean. But since half the people you tell the joke to don't know what the mean is...
If you think about it you actually intended to say median, not mean.
Either that, or you're one of those that don't get it.
Makes me think of the George Carlin quote: “Think of how stupid the average person is, and realize half of them are stupider than that.”