With thousands of different languages across hundreds of different countries across the world it's no surprise that each culture has its own quirks.
What may be acceptable in one country could quite as easily not be alright in the next and it's often easy to misinterpret something if you're not used to the environment you are in.
See also: These are the most miserable international tourists
See also: People who travel are more trusting towards other cultures
It's not just language though, objects can have different meanings too...
These are the foods that symbolise sex in different cultures.