Hello felix2002, and thank you for your question!
I believe the nickname you are looking for is "Lupin," you can find it
in the online text here:
"The Diary of a Nobody."
http://www.kokonino.com/DiaryOfANobody/
From Chapter VI "Diary of a Nobody," by George and Weedon Grossmith:
"He said: 'Oh, by-the-by, did I tell you I've cut my first name,
"William," and taken the second name "Lupin"? In fact, I'm only known
at Oldham as "Lupin Pooter." If you were to "Willie" me there, they
wouldn't know what you meant.'"
I hope this answers your question, and if I can help you with anything
else, please let me know. Thank you for using Google Answers!
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"diary of a nobody" +grossmith
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