DS4 was thoroughly engrossed in our solar system for much of the summer... somehow conversation turned to what different planet dwellers are called. He'd heard that Martians are from Mars. And then asked about Venus -- understanding now that they would be called Venusians.
And a couple of days later he was sharing his book with grandparents when he explained what the inhabitants of each planet are called...
"And this is Earth... people who live on Earth are called Earthians!"
We still crack up over it... and tease him about it to this day.
