Ken Jeong (from the movies "Role Models", "The Hangover" and "Knocked Up") explains this hilarious attack on stereotypes:

"I dont know if you know, but I was a doctor before Knocked Up, and to make a long story short, thats one of the reasons I got cast: because of my medical background. So a lot of timesnot from you, but from other press when Knocked Up came out, they were asking, Well, why do you want to be an actor as opposed to being a doctor? And my character has a bit of that thing: why does he teach Spanish? He has no reason to. So I really transferred that real chip on my shoulder, for lack of a better phrase, to that character, and its really just very real to me. So Im having a great time, and all I can say is, Watch the show."