I had always assumed that this phrase "How's it hangin'?" referred to the penis. In other words, "How is your penis hanging?" But then one day when I was a teenager, a (female) teacher actually asked me that question. I laughed. And then I explained why I laughed. She said, "Oh, it doesn't mean that. It just means, you know, how are you doing? It's like asking someone if they are 'hanging out' or something." Any thoughts?