Locking the kids out

We are between cold snaps, and I sent the kids out in the back yard to burn off some bottled up energy.  They were getting muddy boots, however, so I did what I've always threatened, and I locked them out.

 It went really well.

 As you see. 

They are still locked out now.  Being the sage I am, I told them enthusiastically that clean up would be just as fun. They are on their first (of many) buckets of fresh water to begin the process.