Kratos is happy to show us spartan etiquette step by step:
1. Suddenly you see your one of your friends on the street
2. Give him a warm greeting. Don't forget to smile.
3. There is old spartan tradition to give present to your friends. Your friend would try to do that.
4. Show some spartan modesty and try to return the gifts.
5. Now its your turn to give something back! If you don't have present at the moment than improvise!
6. Give present to your friend.
7. Show persistence if needed.