Your simple thumbs-up can make the second person feel offended. Yes, you got it right.
If you are planning to visit any place, make sure that you do not displease the locals. It's better to know the basic etiquettes of that place. Here are some countries and their customs you will find totally strange. Knowing them will surely keep you safe from getting embarrassed while mixing with the new culture.
Don't raise your thumb even you want to appreciate someone. In many Middle eastern countries like Iran, better to keep your thumbs down.
They will fill your glass if you fill theirs. Otherwise, they feel offended.
People feel offended.
They feel that you need the couch and might offer you.
Being punctual makes you look greedy.
But in Japan, it is considered good to enjoy your soup by slurping.
People might feel that you are thinking them stupid.
This gesture is used only for dogs and is considered punishable.