What is a "turd" configuration file?

I stumbled across an interesting response to an issue on Microsoft Connect and couldn’t help but to laugh:

As a workaround, your add-in might want to store these settings on a per-project basis, or alternatively, you could keep a small turd configuration file next to the .sln that has your settings.

Maybe I need to get some more sleep, but it certainly seems funny at the moment. ;p