Wai [bad word] Ram Muay (Thai: ไหว้ครูรำมวย, RTGS: wai [bad word] ram muai, IPA: [wâːj kʰrūː rām mūɛj]) is a warm up activity in Thai culture that is performed by participants in Muay [bad word]  Wai is an action of Thais to show respect to others by putting the hands together like in prayer. [bad word] means teacher. Ram means dance in the old Thai traditional style. Muay means boxing. Usually Thais prefer to call it short ram muay or wai [bad word]  Ram muay is the way to show respect to the teachers and the trainers. Also, in past muay thai was usually fought in front of the king, so ram muay was also to apologize to the King for the [bad word] in fighting.

The fighter first performs the wai [bad word]  circling the ring three times before kneeling and bowing three times as a sign of respect to God and man. He also bows to Buddha to ask for protection for himself and his opponent and for an honourable fight.

The fighter then performs the ram muay, whose simple movements demonstrate a fighter's control and style. Each fighter performs the ram muay on each side of the ring to demonstrate his prowess to the audience. The ram muay is a personal ritual, ranging from the [bad word] to the very simple, and often contains clues about who trained the fighter and where the fighter is from.

The practitioner may wear a headband called a mongkhon and armbands known as pra jiad during the ceremony, and the Ram Muay may be [bad word] by music. The mongkhon is unique to Thai boxing and not worn in Cambodia or Burma.