Originally Posted by Fat Morm
I just can't see why it wouldn't rub against something with more substance to it instead of using the old shed again?
It probably used the shed because it is the same dimensions as its body, resulting in all the substantial pieces of shed coming off almost instantly. I am also perplexed by it as well, as I have never seen a snake exhibit suck behavior before. I think that an experiment might be in order to try and determine whether it was using the shed deliberately because it was a shed or if it was simply looking for an object that it could use to clean itself.