You guys aren't from the street man. He doesn't live with his mom. When he says "my lil bro" he's talking about his gun. I'll break it down for you. Basically the OP got kicked himself and when they started trash talking him, he said imma shoot all a ya'll. Then his gun (as often with many OG killers) spoke to him n it tickled his trigger finger. Hence, "my lil bro came to me crying". I mean damn. You never listened to Tupac's me n my girlfriend? It's not an actual girl he's talking about. In his case, "his girlfriend" was his gun. Just like the OP's "lil bro" was his pistol...