In Thailand, the standard greeting is the wai. To wai, press your palms together like you’re reenacting Madonna’s Like a Prayer video and lean forward slightly in a slight bow. The height of the hands and the depth of the bow depends on your own age, gender, societal standing as well as how much respect you want to show the person receiving your wai – it can get complicated. In general, it’s best to wait to see if a wai is offered (see what I did there?) before proffering up one yourself, at least until you get used to the practice.