The point is just to write as many funny ways to make trick-or-treaters hate you. All I ask is that you keep it PG-13, and number the ways.
I'll start.
1. Give them a menu and have them order their candy. Keep asking if they want to see the wine list.
2. After giving them their candy, hand them a bill.
3. Open the door and act like you're the trick-or-treater, not them.
5. Fling open the door, point a stick at them and scream, "AVADA KADAVRA! AVADA KADAVRA! DIE YOU STUPID MUGGLE!"
6. Lecture them on the risks of taking candy from strangers.

