The math site that I have linked to in the past, recently moved to a new supporting infrastructure. No matter what I did, I couldn't log in. Finally, I discovered that when you post an answer as a Guest, the system will ask if you want to become a member. So, I needed something to post. A math joke came to mind.
First a definition: Derangements are the number of ways that hats in a hat-check room can be arranged so that no person will get his own hat back.
I found a thread about derangements and posted, "When life hands you derangements, you cannot find your hat, your car-keys, and your MathOverflow account."
I got one down-vote before I had the chance to verify my new password! They are a tough audience!