Re: ribcage sticks out in the middle of my chest
I'm surprised that noone has told you before, but simply put, you have a pidgeon chest. It is uncommon but not dangerous and will not go away. It often happens to people with a naturally thin-and-tall build. Don't worry about it, no big deal. I don't have one but I know a few people who do and nobody seems to care. It just hurts if they try to do the worm (breakdancing).
Well hope I have helped