Why Don't You Get Married?

- Why don't you get married, Holmes?
- Because, Watson, this gives rise to tons of complications. Here I will give you a logical problem. On one of the doors of your house you have your wife knocking because she has forgotten her key home. In front of the other door you have your dog baying and wanting to let it in. Who will you let in the house first?
- My wife, I guess.
- Incorrect, Watson! You should let the dog first in the house because when it comes in, it will immediately stop baying. At the moment your wife enters the house, she will immediately start endless talking.