What does 糗大 (qiǔdà) mean?
Well that was easy: I should have done a better web search before posting. The answer can be found here:


  糗大了，为俗语。为：出丑的意思。（事情搞砸了，出丑了）
  [糗大了 is a colloquial saying meaning "to make a fool of oneself."]


If anyone knows the origin of this phrase, I'd be glad to hear it.