Will impresses the Princeton interviewer by solving a Rubik's Cube in front of him. In The Pursuit of Happyness (2006), he would impress the manager of a brokerage firm by doing the same thing.
The episode title is a pun on the phrase alma mater, a Latin phrase meaning "nourishing Mother".
Uncle Phil's weight isn't consistent. His Princeton sweatshirt he wore at school fits him now, yet in a flashback (s. 3 ep. 2) he was thin before Ashley was born.