The Thai language has extraordinary rich, varied, and multi-leveled vocabularies for sexual anatomy, sexual behaviors, sexual identities, and attitudes to sexuality. The authors of this in-depth study of twenty one keywords deal directly and unflinchingly with the language of sex in Thailand in all its raw, sometimes humorous, and often derogatory immediately. The registers of spoken Thai (phasa phut), the language of the marketplace (phasa talat), as well as official discourse (phasa ratchakan), literary usages (phasa khian), and technical and ecademic vocabularies (phasa wichakan) are all covered.