When Someone gets brosted it means if one of ya bros roasts you

A term used to reference cannabis/marijuana/weed.

when your homie frosts your chocolate cupcake and adds rainbow sprinkles to the top and gives it to you because he is a good simaritain and has done many good deeds, like charity work, and community service, because all he really wants is to see the world become a better place without all the confusion and violence. So all and all just give your best homie a call or someone you love and tell them how much they mean to you and how much they have positively impacted you as a person and changed your life for the better for being there in your life when you really needed someone to look up to and to show you the right way to do things and, anyways im getting off topic here lets get back to the point at hand. Being brosted is the best thing that could happen to 2 homies who just want to have a stable relationship and want to grow for the better together.