I have seen Prolagus use this a couple of times and am curious about what it means. I could probably look it up in Urban Dictionary, but there's no immediate link and I'm not fully awake yet. So I'll just ask.
My first guess would be: "What's The Big Hurry", but that doesn't fit the circs, so then, remembering BHAG (wasn't that "Big Hairy-Assed Goal"?), I thought, "What The Big Hairy". That took me to "What The Big Harry", but then, who the f--k is Harry? But maybe this is short for WTBHAD: What's The Big Hairy-Assed Deal?. I'm feeling lost.