Your tail is now you, so there is an extra you sticking out of your butt.
Of course, since the tail is you, it also has a tail, and the tail of the you that is your tail is also you.
And that has a tail, which is you. But since you have a tail that is also you, the you that is the tail of you has two tails that are you, in sequence.
And they both have tails that are you as well!
And so on ad infinitum.