1. You can't find your cat, so you need to cover your tracks to avoid suspicion.
2. You're a secret agent, and it's protocol.
3. You spilled coffee on the floor, and you don't want to be responsible.
4. You're trying to avoid your in-laws.
5. You're a master thief, and you always cover your tracks.
6. You're trying to escape a bad date.
7. You're a ninja, and it's ninja code.