Comet, Meteorite, Same Difference?

I gave my students quiz 1 from the "Are You Smarter Than a 5th Grader" book. I told them it would be a challenge to get all the answers correct. Any person that got them correct would get to pick a prize from the prize box. I told them they could use any resource in the classroom to help them answer the questions, but they couldn't help each other. During the course of that time Jason came up to me.

Jason: Ms. Hernandez, the dictionary says that a comet is made of rock and metal.
Me: Oh really, show me.
Jason: (runs over and brings me the dictionary open to the page he was looking at)
Jason: See!
Me: That's the word meteorite. Are they the same thing?
Jason: Oh, no.
Me: Okay.
Jason: (walks away, now searching for the word comet)

It's funny how he didn't even realize he looked up the word meteorite and tried to say it was the same thing as the word comet. Funny or just plain ridiculous?