I was visiting a friend in New York City, his apartment had those great oak floors that end up with a bit of a gap as they age. He insisted I drop what I was doing one afternoon and look at his foot - it turned out a shard had pierced his bare heel from standing in one of those cracks. With a tweezers I was able to remove it - and use that as the reason why I never ever want to do something like that myself.

There's something so brazen about that last piece of glass - when you notice it hiding in plain sight.