u/Calm-Ad-3107

My (23F) brother (19M) tends to get irked, when he feels a certain way. Maybe our mom or dad may have kept pestering him or constantly reminding him of something or it could just be a random conversation and he gets irked. I do not seem to understand exactly why he gets irked. Some context, my brother behaves quite differently outside and at home, he's like a high achiever a star pupil and all his friends love him. But at home, he tends to shut himself in his room, comes out for meals and goes out with us but its like he tends to want to be along more. Okay now moving on to what irked him this morning, our mom was i guess kind of praising him for making his own breakfast then he snapped and said oh im not a child like i can do these kinds of things. He was affectionate to my mother and was preparing to eat by himself in his room and my mom was like oh eat at the table, then he just closed the door and ate by himself. After he came out and when i tried to talk to him the only thing he said was mom doesnt know when to stop sometimes and he doesnt want to get into it. Fast forward to a few hours later ( hes still in his room door shut) he comes out and we were like lets go do the family activity we decided to do today. He's like sure and goes in to change, while this is happening, my dad kind of yells for him to come out because we are all ready to leave and he doesnt answer. Then my mom knocks on his door asking for him to come out he doesnt answer. So we go ahead to do the activity we were planning to do without him. Right now he's still in his room and I have no clue on how to reach out to him and be firm about disapproving this behaviour cause im scared it will worsen it or estrange us at the worse. Any advice?