Kowtow!

Learnt a new word - Kowtow in the excerpts of the book, "Will I Am". Here's what Wikipedia has to say:

Kowtow (traditional Chinese: 叩頭; simplified Chinese: 叩头; pinyin: Kòu tóu; Cantonese: Kau tàuh) is the act of deep respect shown by kneeling and bowing so low as to touch the head to the ground. While the phrase Kē tóu (磕頭) is often used in lieu of the former in modern Chinese, the meaning is somewhat altered: kòu originally meant "knock with reverence", whereas kē has the general meaning of "touch upon (a surface