There is a toilet in the neighbor's front yard today. We don't know these folks that well and are thus not privy to the inner workings of their household. One can only guess what would make a man put his john on the lawn.
Maybe he is trying to send a message to the sweet lady on the hill who lets her dog loose in the neighborhood pooping in everyone's yard but hers. "Hey Lady! If you're going to let that mutt roam, the least you could do is teach him to use the loo!"
Like the Springtime banner that heralds the coming of new life or the front porch Jack-o-lantern that sets the mood for the season, does this monument announce the coming of a crappy day? It is on a dolly which indicates that this potty is on the move. With a hope of change he is prepared for his situation to improve. Today might be bad, but tomorrow will be better.