Smug Report - a bug submitted by a user who thinks he knows a lot more about the system's design than he really does. Filled with irrelevant technical details and one or more suggestions (always wrong) about what he thinks is causing the problem and how we should fix it.

Drug Report - a report so utterly incomprehensible that whoever submitted it must have been smoking crack. The lesser version is a chug report, where the submitter is thought to have had one too many.

Shrug Report - a bug report with no error message or repro steps and only a vague description of the problem. Usually contains the phrase "doesn't work."

--
..eine Perle aus diesem Thread auf SO.