When you sound like one. Some kids will play in a way that is generally acceptable so it doesn't really matter if they're a kid or not My personal definition of a "Squeaker"(not a kid) 1.High pitched voice(that's obvious). 2. Tries to control everything in the group and doesn't think anybody else might have a better way. 3. Never blames himself and only ever blames his teammates even if he himself is the one that dies constantly. These are the ones that I hate playing with! Unfortunately you have to play with them to find out.Generally breaks around 14, you'll start listening to suggestions and actually be a bit more mature