My little cat loves to go in and out doors. She frequently goes out, asks to come in and then immediately ask to be put out again. We call her game, "in again/out again".

Sunday it was a nice, balmy, cool day. My DH and I were canning pickled beets and we propped the storm doors in both the front and back open so we would get a cross breeze. My kitty took herself in out the front door, walked around to the back, came in the back door and then went back out the front door 42 TIMES! She was in heaven. We laughed so hard. She finally wore herself out and slept so well that night we hardly knew we had a cat.

They sure keep you entertained, don't they?