Bart: [sighs] I wasted five bucks on these. Lisa: Where'd you get five bucks?

Bart: [sighs] I wasted five bucks on these.
Lisa: Where'd you get five bucks? I want five bucks.
Bart: Aw, I sold my soul to Milhouse?
Lisa: [incredulous] What? How could you _do_ that? Your soul is the
most valuable part of you.
Bart: You believe in that junk?
Lisa: Well, whether or not the soul is physically real, Bart, it's the
symbol of everything fine inside us.
Bart: [tsking sadly] Poor, gullible Lisa. I'll keep my crappy sponges,
thanks.
Lisa: Bart, your soul is the only part of you that lasts forever. For
five dollars, Milhouse could own you for a zillion years!
Bart: Well, if you think he got such a good deal, I'll sell you my
conscience for $4.50.
[Lisa starts to walk off]
I'll throw in my sense of decency too. It's a Bart sales event!
Everything about me must go!
-- Great selection and rock-bottom prices,
but where is the soul?, "Bart Sells His Soul"