Homer: Look, the important thing is that we all learned a lesson. These guys learned the richness and variety of the world outside college.
Nerd: No we didn't.
Homer: Oh. Then I learned the real value of college is to study, and work hard.
Lisa: No you didn't. You only passed your course by cheating, which you always taught us was wrong.
Homer: Hmm... true.

Marge: An A+! How did you do it?
Homer: Oh, let's just say I had help from a little magic box.
Marge: You changed your grade with a computer?
Homer: D'oh!

I am so smart! I am so smart! S-M-R-T! I mean, S-M-A-R-T...