The Wai Khru is a ceremony performed to respect your teacher or master. Wai = ไหว้ = respect or to honor + Khru = ไหวู = teacher or master. In Thailand, this term is used for any ceremony where you show respect to your teacher, such as for school teachers and Muay Thai and Muay Boran trainers. In Muay Thai and Muay Boran, this is actually called Wai Khru Ram Muay (Ram Muay = รำมวย = ceremonial dance + fist fight), but most people just use the short forms Wai Khru or Ram Muay. As you can probably guess, the Wai Khru Ram Muay consists of two parts. The first part is the Wai Khru, where you circle the ring three times (walking), then kneel down 3 times and bow 3 times as a sign of respect to god and man. Then you get up again and get to the Ram Muay Part. The Ram Muay is a personalized dance where you show your style, movements from you school etc. While the Wai Khru is a respect thing, the Ram Muay is more of a warm up and get ready to fight thing. When foreigners fight in Thailand, it is also a form of respect to the Thai culture and the Thai audience to perform the Wai Khru before the fight. Find more information about Muay Boran here. For more videos, click here.