Thanks to your feedback and good advices I tried to fix the picture a bit - it's still not perfect, but better. Thank you. And thanks for all the interesting interpretations as well, it was great to read them and find out, what you think.
Actually there is a story behind it. But I rather leave it to you (to be honest, I'm even curious, what would your interpretation be).
Nothing close to realism, just making weird stuff. And I hate this picture composition-wise - I have no idea how to cut it to make it look good...
Done somewhere in the middle of July.