Thai people seem to shower in the early evening- right around when the sun goes down, before dinner. Perhaps this is to cool off after the peak of the heat. One way you can tell they've had a shower is when they step out onto the street with damp hair just combed and a body covered in talcum powder. Apparently talcum powder rubbed over your body after showering will keep you cooler for a longer period of time - staves of the sweat, I guess. I tried it a few times and it seemed to work :-)

Feet are considered the dirtiest and least important part of the body. So, a little tip to keep you on your toes in Bangkok! 1. Feet are not to be the topic of conversation. 2. Feet must not be used to point at an object or person (especially someone's head) 3. Do not show the soles of your feet (e.g. putting them on top of a table, crossing your legs, etc) 4. Do not step over anyone or over anyone's food.