Numb3rs Fanfic Finders

Hi all,

I'm looking for 2 fics about Charlie.
1) All I remember is that Don is at a crowded campus sandwich shop, waiting for Charlie to join him for lunch, and Don overhears several students talking about how great Professor Eppes is while they study math.

2) This is H/C. Charlie and Don are in high school. They get into an argument, and Charlie does calculations about how to use drugs to brain damage himself just enough to be "normal."

Thanks for the help🙂