What do you think about me putting a worm in an apple and then giving it to my teacher?
Is this something you're serious about?
I'm just kidding. It is no-no in our school to do this.
Well, I'm happy you're just kidding. It would be really bad for you to put something in her food, even as a joke. I hope you never do something like that in the future.
I don't think she'll die if it's just a worm.
While she wouldn't die, it is kind of a mean-spirited prank to play on someone. You shouldn't place any foreign objects or things into someone else's food.