The tip of the iceber

"The tip of the iceber" 

Oh , why are you so upset?
= I had a fight with my manager. But, this is just the tip of the iceber! I got fi...
- Wait! What does that mean!
="The tip of the iceberg" is and idiom that referes to a small part of a huge problem!
Examples :
They fought togheter but it´s the tip of the iceberg! one of them has broken the otherps arm!

- Oh okay got it, so that means that your fighting with your manager is just a small part of your problem?

= Exactly, I also got fired and fell down in a hole and couldn´t get out and spent the whole day in there until someone came and helped!