Lisa: A gentleman doesn't ask, and a lady doesn't tell.
Bart: Can I use that on the chalkboard?
Lisa: I guess.
Bart: [into a recorder] Gentleman doesn't ask, lady doesn't tell. [puts recorder away] Now all I need is one for Martin Luther King day.
Homer: [seeing all his sperm are dead] Oooh, Xs for eyes.
Marge: So you don't want another baby? How long have you felt this way?
Homer: Uh, well, looking back, I guess it started sometime before Bart was born.
Homer: [in his mind] Maybe there's no such thing as too many kids.
Marge: [in her mind] I know what Homer's thinking. He's thinking that he really wants another baby now, so this should be the time, ironically, that I'll change my mind and not want one. Well no way, I want one more than ever!