Don’t go into the woods on your own. If you’re a woman, and a naked man advances towards you with his feet pointing backwards, you have no chance. It’s him. You will be danced or tickled to death. And then eaten.
If you’re a man, it will be a naked woman likewise. If you go as a pair it may confuse him, but we can’t vouch for it.
There are no reported sightings of OVDA outside of Finland, but for maximum safety we suggest that if you are ever confronted by a naked person, you get a good look at their feet before engaging in any other activity.