Crazy idea?

Recently I have received a lot of those "Thanks for attending our wedding cards" you know the ones with a picture of the married couple and a short note. Well I was thinking it could be a good laugh to send them back a thank you card for being invited to their wedding. You could just have a corny photo of yourself with your dog, and a short thank you note to let them know how special you felt being invited. In theory it sounds funny to do, I don't know if I would actually do it though. But It's just so tempting :]