In this case, I'd assume the person is saying that they are exhausted or spent. "Drawn out" is also very commonly used to describe something that has either taken a very long time or has taken much longer than necessary. For example: "That speech was really drawn out, it took over an hour!"

It means a lengthy process. e.g: "Building my house was a long, drawn out process."

In this usage, it would be like saying "I'm exhausted." or "I'm very tired."

thanks to averyone!... now is clear! :)

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