Some of the things that could happen is you could turn into a meme and get teased for looking like you do. Even if you did nothing to deserve this.
Or you could be going into an interview with your dream job and can't get it because of what you had put on the internet.With everything that they had said, I think that you should watch what you put on the internet. If things get to extreme then delete your social media account. Karma might come and get you if you are doing something wrong.