A fifty-five word story about nothing

He has been asked to quote the fifth sentence of his twenty-third post.

He trembles as he browses his postings, and then laughs.

The sentence being written, his fifth sentence in his twenty-third post, is writing itself, quoting itself, and is wrapped in itself.

The fifth sentence in his twenty-third post is a black hole.

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Thanks, Vishkanya for the tag.
I tag, with this double whammy of tags, Letterhead, in her new Avatar - Laura, Ani too, who has moved from ex-ante to ex-post, Runglee (this tag brought me back to blogging, I hope it will do the same to her too) and M., who, I hope, finds time to blog in South Africa. All you have to do is pull up the fifth sentence in your twenty third post (tag #1) and write a storyt with exactly fifty-five words (tag #2). They do not have to be related.