It is a religious symbol but how many people do you think will understand that? :/ Most people will probably think you're a (neo)nazi.
Yes--middle of your forehead to make you easy to identify and deal with
If you reverse the direction of spin from the Nazi version, yes--particularly Hindu/Indian. Unfortunately, thanks to Hitler most people have forgotten it's original meaning.
do you live in a trailer?
then it's perfect!
yeah, do that... great idea mate