Trick or Treat Ultimatum

I was trick-or-treating with my five-year-old sister. A lady answered the door and said, "If you tell a good joke, you can get candy." This is what my sister said...

Sister: "Why did the chicken cross the road?" Lady: "To get to the other side. That's an old joke, tell a better one." Sister: "Why did the goose cross the road?" Lady: "Why?" Sister: "To get dead. Now, are you gonna give me lollies or what?" I was so surprised!