After you've done one or more of the following:
1. Come within a foot of being hit by a car turning a corner at high speed
2. Smashed a wine glass in your spare bedroom (slash office), spraying the bedspread and your keyboard and--after sweeping up and cleaning up what you think are all pieces, but of course you can never get all the pieces--creating a nice minefield of invisible glass shards you can spend the rest of the evening walking on and getting stuck on your feet (and no doubt in future, the cat's feet)
3. Deselected the entire contents of your music library, necessitating a painstaking song-by-song review to recreate the preferences it took months to set and exclude the songs you don't want to hear on shuffle
4. Wrapped all this up by smacking you bare toes, full force, into the dining-table leaves leaning against the wall
It irks me that almost all of this can be chalked up to clumsiness.