[There was a video here]
At Bangkok's only government-approved body-slapping beauty shop, Khemmikka Na Songkhla will repeatedly slap a woman in boobs, butt, or face, to improve shapeliness and size. During a demonstration for the Bangkok Post, she explains that this is an "ancient art," but "ancient people didn't share it much because back then people didn't care about breast size." Consequently, "the only one who can practice this wisdom" today is Songhkla.
Her robust body-slapping business includes private body-slapping sessions, a body-slapping training program, many rainbow muumuus, and a sound system that plays disco music for her to slap along to. [Bangkok Post, Daily What]