So, anyway, I got some inspiration, and I have devised the best thing to do on Halloween.
Step 1: find the house of a whovian
Step 2: secure an 2 angel statues, one with its hands over its eyes, and one with the vampire look of the aggressive form
Step 3: place the weeping one in plain view of one of the house's windows, in a room said whovian uses often.
Step 4: when ever they leave the room, move the statue closer and closer.
Step 5: wait until he starts staring at the statue
Step 6: Knock on the door, asking what happened to your friend, he has disappeared (and such)
Step 7: when he leaves the room to go answer the door, place the second angel, with its finger pointed right at the door, start asking where it came from (loud enough for the person you are pranking to hear), stop mid-sentence, then hide in the bushes.
Step 8: enjoy their reaction to the appearance of the weeping angel.
note, make sure the first angel is out of view of the door, and move it out of sight as soon as the guy goes to answer the door.
~~~Darth Caedus