Bart: Look alive, Simpson, I'm not paying you to goldbrick.
Homer: [wakes up] Uh... Yes sir.
Bart: Now get cracking on my long division, and don't forget to show
your work, Simpson.
Homer: I'll have it on your desk tomorrow morning, sir.
Lisa: Bart, leave Simpson alone! [whispering to Homer] Simpson, I need
a ride to the library.
Homer: Yes sir.
Marge: Kids, stop exploiting your father. Homie, why don't you lie down
Homer: No time, Marge. I thing Mr. Burns wants me to do some long
Marge: [authoritatively] Simpson, lie down!
[Homer does so]
Sorry, but you need a good night's rest.
-- More obedient than the dog, "Homer the Smithers"