There are countless small things that we do without thinking on an everyday basis that could greatly offend a Thai person. For instance, the head is seen as sacred, so you should never touch the head of a Thai person (you shouldn't even touch the head of an inanimate object-like a statue or painting). On the flip side, the foot is seen as low, so you should never touch the foot or point your foot in the direction of someone or something, particularly a picture of the royal family or any Buddha statue. It's also important never to put your feet up on a table or anything similar.