Siblings from birth , friends for life

My siblings and I had some pretty good times. Usually my 13 year old brother and I just start cracking up on our younger brother. Other times we just go outside and play outside games if we had nothing better to do. When we crack on our younger brother, our younger brother just sits there and laughs because he doesn't understand whats going on. We all used to play catch and play basketball. Honestly, I don't really have much of a relationship with my sibilings because I was barely around either of my parents. But I wish things were different because it gets me upset when others talk about their brother or sisters