Acting like a 4 years old

Mami asked me today how old I was. I answered confidently that I was 4 years old. Mami asked if I was sure and I replied with a loud YES! I knew Mami was up to something. Mami then said that if I was 4 years old, I should behave like one. I have been acting like a baby recently, clinging tightly to Mami. This morning I tried to hold Mami back from sending Kor Kor to school. I kept telling Mami that I would miss her and I did not want her to leave the house. Am I acting like a baby?