Do you have one of those people in your class that is so completely stupid its a miracle he even got into college?

There's this kid in my dinosaurs class that acts like a 7th grader, no lie. One time, he says, "I was watching the Land Before Time last night, and the brontosaurus WHOMPED the T-rex with his neck. It was so cool. Did they really do that?"

Or today:
Kid-"How can we tell how old dinos are?"
Prof- "From the growth patterns on their bones, its similar to tree-rings"
Kid- "Do we have that too?"
Prof-"Humans? Yes..."
Kid- "Well what about......jellyfish?"

You can tell he's trying hard to get people to laugh, but no one does, since we all got over that kind of humor in middle school.