Studious

"Mom, did you know that round glasses are called 'studious' glasses?"
Really? (actually, I had NO idea, so this was a pretty cool piece of info)
"Yep.  They are the kind of glasses that Harry Potter wears."
And he is studious? 
"Yep."
Are your glasses round?
"Nope, they're oval.  But I AM studious anyway."