He's my brother

I was walking my dog and witnessed this scene as an innocuous passer-by:



Kids 1,2,&3 are on their bikes. Kid 1 (the youngest) rides around a house leaving 2 & 3, who get off of their bikes and begin talking or planning or whatever. Kid 1 calls out for Kid 2 from afar, to the annoyance of Kids 2 & 3 (they are being interrupted). But Kid 2 gets on his bike, and then intimates to Kid 3, 'Yeah, I know. I hate him too, but he's my brother." and rides off to find out what his brother wants or needs....