Because of...

Thanks Min! And keep waiting for a lovable dog to show up...one day buddy, one day!
Father: Every rat catcher in the country takes his rats to the Licorice Bootlace Factory, and the manager pays tuppence for each rat. Many a rat catcher has become a millionaire by selling his dead rats to the factory..
Thwaites: But how do they turn the rats into licorice?
Father: They wait until they’ve got ten thousand rats. Then they dump them all into a huge, shiny steel cauldron and boil them up for several hours. Two men stir the bubbling cauldron with long poles, and in the end they have a thick, steaming rat stew. After that, a cruncher is lowered into the cauldron to crunch the bones, and what’s left is a pulpy substance called rat mash.
Thwaites: Yes, but how do they turn that into licorice bootlaces, Daddy?
Father: (pauses to think for a few moments) The two men who were doing the stirring with the long poles now put on their Wellington boots and climb into the cauldron and shovel the hot rat mash out onto a concrete floor. Then they run a steamroller over it several times to flatten it out. What is left looks rather like a gigantic black pancake, and all they have to do after that is wait for it to cool and to harden so they can cut it up into strips to make the bootlaces. Don’t ever eat them. If you do, you’ll get ratitis.
Thwaites: What is ratitis, Daddy?
Father: All the rats that the rat catchers catch are poisoned with rat poison. It’s the rat poison that gives you ratitis.
Thwaites: Yes, but what happens to you when you catch it?
Father: Your teeth become very sharp and pointed. And a short, stumpy tail
grows out of your back just above your bottom. There is a no cure for ratitis. I
ought to know. I’m a doctor.
Me: Jose, I need to speak to you after class.Jose: What! I didn't even do nothin'.Me: (stoically waits until everyone leaves) Can you explain this drawing to me?Jose: Well the letters here (points to gangster bubble letters) say love because Bess was in love with the Highwayman and here (points to other gangster bubble letters) it says madness because the Highwayman went all crazy when he heard about her death.Me: Oh, (cough) well, I couldn't read that. But what about this PENIS!Jose: Ah mang, that ain't a penis! It's her arm! See that's one of her fingers reaching for the gun and that's the rest of her hand.Me:Jose:Me: I apologize Jose. I see that you've really understood the story. Thank you for explaining this to me. Do you need a pass to your next class?Jose: Yes. Sorry Ms. Won. I won't draw no more.