Several years ago, I used to work for a now defunct online web site company that provided websites to customers. Customers were required to activate their site and sign in to a site management web page. Although the password policy was not as sophisticated as it should have been, we did require password to be between 6 and 16 characters.
We received an email from one customer who was helping a new customer activate and sign up for the web management page. The new customer liked to pick passwords based on a mild shock value and wanted to use "Penis" as his password. The customer wanted us to know that they almost died laughing when the web page responded back with the message:
"Password rejected. Not long enough. Please try another."
Remember, password length is important. Choose your length wisely.