In Thailand, the head is regarded as the highest part of the body, both literally and figuratively. It is the ‘home of the soul and the spirit’ and must be given respect. Thus, Thai people are careful not to touch the head and hair of other people.
Touching people’s heads is taboo – it is taken as an insult, a serious lack of manners. Only parents, grandparents and other senior relatives can touch the heads of their small children or grandchildren. When the children grow up, even that is no longer allowed. Sons and daughters do not touch their parents’ heads.
In social gatherings, young Thais try to keep their heads lower than those of their elders, and you should avoid passing things over people’s heads.
If you touch someone’s head by mistake, you should apologize immediately.
To the same extent as the head is considered a sacred part, in Thailand, like in many other Asian and world cultures, the feet are considered the lowest part of the body, and impure. It is considered offensive to close cupboards, drawers, doors and so on with a foot. Using your foot to kick an object or to point to something is also very bad form. You should remove your shoes before entering a temple or someone’s home.