bú cu

== Vietnamese == === Etymology === bú (“to suck”) +‎ cu (“dick, cock, penis”) === Pronunciation === (Hà Nội) IPA(key): [ʔɓu˧˦ ku˧˧] (Huế) IPA(key): [ʔɓʊw˨˩˦ kʊw˧˧] (Saigon) IPA(key): [ʔɓʊw˦˥ kʊw˧˧] === Verb === bú cu (sex, vulgar) to give a blowjob Synonyms: bún cua, thổi kèn