When unable to establish internet connection due to proxy settings.
When all my working tables in MASTER database have been deleted by DBA.
When in memory technology gives us opportunity to do all sorts of crazy test we always wanted to.
When killing a process that is deadlocking my process.
When returning to the office from conference with bag full of promotional merchandising for colleagues.
When committing my code 14 days prior to deadline.
When vendor is convincing group of DBA that maintaining their database is utterly simple.
When exception handling is in the scope of different method.
When naming my schema as MyOwnSchema.
When my write permissions have not been granted.