A person's preoccupation with defecating in the great outdoors would not seem to be freaky. But, I'd be alarmed if this preoccupation became an obsession such as waking up in the middle of the night, taking a dump on your neighbor's prize-winning hybrid Tea Roses, and then letting the neighbor's dog take the blame.
Are you a freak? You might be a freak if taking a dump in the great outdoors is more appetizing than buying a happy meal at McDonalds.