Not Walking Under Laundry Lines
Many Thais won't walk under laundry lines, because they believe it's bad luck. At the same time, they think the amulets they wear would lose their supernatural powers.
For the same reason, some conservative males won't wash their partner's sarong and underwear.
Not Throwing Socks On The Head
Even between a couple, joking around by throwing clothes that Thais consider low and dirty, such as socks and underwear, on your partner's head is not tolerated and disrespectful.
Lowering The Body When Walking Past Elderly
When walking past someone who's older or of high respect such as monks, members of the royal family and teachers, Thais lower their head and body as a sign of respect.
Not Standing Next To Sitting Elders
Likewise, Thais don't stand next to older people that are sitting. Instead, they sit down at a lower level to show respect.
Not Pointing The Feet Towards Others
Avoid pointing your feet towards others and objects that are of high respect, such as Buddha images, since that is considered rude.
Removing The Shoes
Thais remove their shoes before entering houses and temples. That is because shoes are considered dirty.
At most doctors clinics, you are asked to remove your footwear. If that makes you uncomfortable, you can wear socks.
Although some of you may not be able to relate to the above practices, knowing about them makes it easier when you visit countries where there is a strong culture. Being familiar with the local ways, will save you a lot frustration and make your stay more enjoyable.