Jehovahs Witnesses don't celebrate Halloween. I guess they don't like random people coming to their door.

What do you call someone who puts poison in a person's corn flakes?........A cereal killer

For Halloween you should go as the person you claim to be on facebook.

When black cats prowl and pumpkins gleam, may luck be yours on Halloween...

Ghosts and Goblins, Spooks galore, Scary Witches at your door, Jack-O-Lanterns smiling bright, Wishing you a Happy Haunting Night!

By the pricking of my thumbs, something wicked this way comes.