TMI is a slang word Koreans use and it means ‘Too Much Information’. It is used when somebody gives too much information about himself/herself like what he did today, for example, information that nobody cares about.
재원: Hi! How have you been? We haven’t seen each other all week.
예현: Hi! I’m good! Well…I’ve been busy all week preparing for my exam and I could barely eat anything because of stress and my cats kept on meowing because I ignored them and forgot to feed them.