Travelling to different countries other than yours turns out to be quite interesting as you are bestowed with different activities and cultures which you have never seen hence, soothing your curiosity. But, it may turn out otherwise if you haven’t learned much about them and hurt them in a way you consider are not worth hurting.
Yes indeed, there are things, one of them being hand gestures, which you may take appreciating positively, but are equivalent to bigger abuses and insults in many different countries. Performing such gestures to the wrong person in the wrong place, might get you involved in a fight or even worse!
So tread carefully while flashing the listed gestures in the concerned countries, it can quite literally, save your life!