The Sweet Smell of Freedom

We had our cat trained to sit on the table in the backyard, but then one time I accidentally let him out when I was grilling and, by the time I realized, he was down in the grass in the backyard. Since then, he has not been happy outside unless he is in the grass, but he isn't allowed to go down there since he is an indoor cat. Today he escaped and was briefly very happy. Being that he is a cat, his happy face is the same as his "I will kill you in your sleep" face.