What's wrong with this picture?

I got this "story" from a former student who is now at another school.  The names have been omitted to protect the idiot, she had in her class.

Okay. Okay. I have yet another something to share with you.
So there I am, in my Art of Mexico class. The professor goes "And we recognize this guy right? Back from the Aztecs? Who was this god with light skin and hair?"
AND NO JOKE this (must have been super high) dude right behind me goes
".......Aristotle?"