Zarro boogs

Zarro boogs is a facetious metastatement about the state of development. Bug trackers, used to monitor the state of problems with a software project, readily describe how many bugs are outstanding. The response "zarro boogs" (instead of "zero bugs") is intended as a buggy statement itself, implying that even when no bugs have been identified, software is still likely to contain bugs that haven't been identified yet.

Bugzilla bug tracking software

By design, the bug tracking software Bugzilla is programmed to return the string "zarro boogs found" instead of "0 bugs found" when a search for bugs returns no results.

The following comment is provided in the Bugzilla source code to developers who may be confused by this behaviour:

Zarro Boogs Found

This is just a goofy way of saying that there were no bugs found matching your query. When asked to explain this message, Terry Weissman (an early Bugzilla developer) had the following to say:

I've been asked to explain this ... way back when, when Netscape released version 4.0 of its browser, we had a release party. Naturally, there had been a big push to try and fix every known bug before the release. Naturally, that hadn't actually happened. (This is not unique to Netscape or to 4.0; the same thing has happened with every software project I've ever seen.) Anyway, at the release party, T-shirts were handed out that said something like "Netscape 4.0: Zarro Boogs". Just like the software, the T-shirt had no known bugs. Uh-huh. So, when you query for a list of bugs, and it gets no results, you can think of this as a friendly reminder. Of *course* there are bugs matching your query, they just aren't in the bugsystem yet...

--Terry Weissman

From The Bugzilla Guide - 2.16.10 Release: Glossary