I found a strange search result for a resource blocked by `robots.txt`. 
Why ist there the Chinese (guessed) text followed by the text `Hello nighthawk!`. Is this an esteregg of Google? 

[![Google Hello Nighthawks][1]][1]

Yesterday I tried to remove the URL from google with Webmaster Tools. 
There was no `Hello Nighthawk!`, only the 'blocked by robots.txt' message. The issue was reported by a co-woker. 

[![reported issue][2]][2]

This is the content of the `robots.txt`:

```User-agent: *
Disallow: /en
``` 

The URL `domain.com/en` gets a `301` redirect to `domain.com`.
The title of `domain.com` does not contain any of the words. 

I used google.de to find search.


  [1]: https://i.sstatic.net/1kwqN.png
  [2]: https://i.sstatic.net/MEv1k.png