I've seen something like this while bartending. Woman was trying to get inside my closed bar and wouldn't stop. She didn't disrobe, but was clearly out of her mind. My friend and I finally got it out of her that she was trying to get into her apartment which just happened to be the NEXT door over.

We got her into her building, and up to her apartment. Then got the fuck out of there. Her roommate happened to be a regular and when I mentioned the story to her she said she had heard about it from her roommate.

Now, we will never know what it was exactly. But having been around a lot of drunk people for many years, it clearly wasn't JUST alcohol.