I often see this posed as a clarifying question when people are discussing project milestones. In fact, I just saw it this morning as the results of a google search for it led some unsuspecting reader to my blog for an answer. Fortunately google knows all and tells all so I'm happy to pass it along:
"What does "done" look like, you ask? It's when the hot dogs start turning real deep red, and may start having bubbles form on them. They might also crack" Source:http://jweisz.org/food/mac_n_cheese.html
I don't know how you can do any better than that.
