IsMyQuestion lets you easily create pages with a question and its answer.
ismyquestion.com
ismyquestion.com
That being said, isn't the joke that you have a really long domain name like ismycatstillalive.com and then the only content is a simple answer? I feel like ismycatstillalive.IsMyQuestion.com just isn't as funny.
I wonder if they let you point your own domain at them with an alias DNS record...