Stands for "In My Opinon". The most insecure way to state your opinion. Used by those afraid to get into a big argument with someone who disagrees with them.
Using IMO makes you a pansy of the internet message boards. If someone barks back at you for stating it as a fact, let them. If they don't understand that it's an opinion, that's their problem.
IMO in japaneese means POTATO
Sounding like 'emo' which is a type of music / short for emotional / group of people / lable... etc.
Making it a great inside joke for when you are talking about potatos or emos.
1. Those silly imo kids!
2. Nasty! These fries don't even taste like emos!
3. Look at those weird potatos; they act like they are goths!