Can happen to anyone. Suddenly you realize you have to shave a yak in order to get your work done. Well, at least it seems to. And of course, you should try to get work done without shaving that yak.
Definitions found at http://www.catb.org/~esr/jargon/html/Y/yak-shaving.html and at http://sethgodin.typepad.com/seths_blog/2005/03/dont_shave_that.html
Thanks taoofit (http://twitter.com/taoofit - Nigel Green) for the yak shaving pointers.