It is believed that on holloween the world of the dead and the world of the living cross each other . It is possible you witnessed a spirit messing with you for fun . But it is more likely that it really was just some kids in the tree with some strings . You should ask the people that live their to really know .
Ignore everyone who says you were drunk , even if you were the chances of hallucinating the same thing is highly unlikely .
you should have asked any way. you could have been like "hey where did you get that cool moving scarecrow?" and if they say what moving scarecrow you say i'm sorry i have he wrong house. no harm no foul.
There is no such thing as an inevitable war. If war comes it will be from failure of human wisdom.-Andrew B. Law