Charlie is actually the Nobel Laureate J.M. Coetzee, who won the literature award in 2003.
He constantly hunts for public recognition for this acheivement, and when he shows up to family functions such as Easter or Thanksgiving dinners, he wears the medal around his neck and refers to himself in the third person as 'The Nobel Laureate';
Such memorable moments include "Could someone please pass The Nobel Laureate some mashed potatoes?"
or "You really think that Nobel Laureates clear the table and help with the dishes?! Bitch, you better get the Laureate some fuckin' pie!"