1) You step in fresh cat barf. Not sure if that's worse than stale cat barf?
2) You spill dry cat food on the kitchen floor and say, "Fuck it. They'll eat off the floor and enjoy, damn it!"
3) You grab the toothpaste tube instead of the L'Oreal BB cream tube. Sensodyne toothpaste just doesn't give me that fresh-skin look I was going for.