The Other Picture of You?

O.k. we all know these kind of...

...set up's. You'll just go there and put your head in the niche or in a whole and have some one take a funny pictures of you. You've done it, I've done it, we all know the drill. 

But now check that one out, there is a little construction behind it with three steps. And...

...WHAT exactly are you supposed to put through the whole here???

Seen in Olinda, Brasil.