Homer: Ooh, punch! Lisa: [sniffs it] Ew! Dad, this is blood!

Homer: Ooh, punch!
Lisa: [sniffs it] Ew! Dad, this is blood!
Homer: Correction -- _free_ blood.
-- Always lookin' for ways to save,
"Treehouse of Horror IV"

Related:

• Brockman: In a completely unrelated story, Montgomery Burns has just closed a deal to buy the Springfield Blood Bank.
  Burns: [blood on his cheek] Ooh, I'm very excited about...
• Homer, we've got to do something. Today, he's drinking people's blood.
  Tomorrow, he could be smoking! -- Marge, concerned...
• Bart: Come join us, Lisa. It's so cool: you get to stay up all night drinking blood.
  Milhouse: And if you say you're a vampire, you get...
• Lisa: [sotto voce] Dad, do you notice anything strange?
  Homer: [sotto voce] Yeah, his hairdo looks so queer...
• Homer: Well, time to go to work. Lisa: Dad, I wouldn't go outside if I were you.
  [Chief Wiggum and a lot of cops stand on the street...
• Homer: Ooh, I can't get enough of this blood pudding.
  Bart: The secret ingredient is blood. Homer: Blood...
• Lisa: [reading the classifieds] Hey, here's a good job,
  Dad! Oh, wait, you have to know how to operate...
• Homer: What?! Flanders! You're the Devil? Devil Flanders:
  Ho-oh, it's always the one you least suspect. ...
• Dear Homer, I. O. U. one emergency donut. Signed, Homer." Bastard!
  He's always one step ahead. -- Homer, not realizing...