It depends on the context. If it's part of a silly, private joke between two consenting friends, it could be considered appropriate in that very specific situation. But generally speaking, it's a rather odd and potentially inappropriate behavior in public or more formal settings.
I'm not sure what exactly your friends' feet story is. You could start by telling me some details like if there was an adventure they had while walking, or if something special happened to their feet during a sports event.
It could be a story about a memorable adventure they had while walking or running together. Maybe they climbed a mountain and her feet were sore but she still pushed through.
One story could be that your friend went on a barefoot pilgrimage. They walked for miles, their feet free to experience the different terrains of the path. Along the way, they met interesting people and had deep conversations, all while their feet were in direct contact with the ground.
They could be about adventures where your friends' feet are free to roam, like hiking in the mountains. Their feet are unrestricted by shoes or any bindings, feeling the earth, rocks, and grass beneath them.
I don't know the story yet, so I can't say which part is the most interesting. But it could be something like when they discovered they could run faster with new shoes on their feet.
Well, it could be about the freedom of movement of your friends' feet. Maybe they went on a long hike and their feet were free to explore the trails. Or it could be a story about them getting out of restrictive shoes and feeling the freedom of bare feet on the grass.
No, it's not normal in a general sense. Normal behavior usually doesn't involve having an affinity for stinky feet. It could be a sign of a very strange sense of humor or an inside joke gone too far.
A friend of mine once got a foot massage at a spa. She said it was the most relaxing experience ever and she couldn't stop talking about how good it felt for days. Also, there was a time when a group of us were playing a game where we had to paint each other's toenails. It was a really fun and silly moment. And my friend who is a dancer had a sprained ankle once. It was a tough time for her but she worked hard to recover and get back on the stage, which was really inspiring.
Well, it could be that her feet have a special talent. Maybe she can wiggle her toes really fast or use her feet to pick things up in a funny way. This has led to many humorous moments between us.