TOON RIDDLE FOR DUMMIES

Query: A man says: "Brothers and sisters, have I none, but that gentleman's father is my father's son." That is he pointing at?138. I come in a variety of colours And that i get even bigger Once i’m complete. I will float away when you don’t tie me down And that i is likely to make a loud seem if I break. What am I?Interviewers talk to brain te