A hat with a 'B' on it!
My wife, was in Boston just yesterday on her way back from vacation. Since she had to stay the night, she decided to get a few souvenirs. I'm not much for souvenirs, but I'll never turn down free stuff. On the phone she said, "I bought you a hat with the letter B for Boston." I said, "Like a Boston Red Sox hat?" She replied it was just a hat with a letter B.