In this episode Ricky stays home to watch the fight with Fred. While Ethel is trying to get Lucy out of the house to go shopping. After Lucy and Ricky say their goodbyes for the day, Ricky leaves the front door open, Lucy meanwhile is crying to Ethel ( in Ethels apartment ) about how little Ricky is growing up too fast. Notice Lucys shoes... Well now little Ricky is standing at Ethels front door. The two try to hind little Ricky from Ricky and Fred. Lucy runs upstairs to her apartment and to your amazment now shes wearing different shoes. I guess she wasnt worring too much about little Ricky if she had time to change her shoes.