The Leaning Tower of Cactaceae...What's Up with That?

This morning I discovered that my little cactus' were all leaning forward. I wonder why this is? I am perplexed because they were not like this a couple of days ago. Anyways, I think they have their own sense of humor. :)~





I also have this one huge cacti that is ready to fall over. Coincidence? We will have this one straightened out soon.