A phrase originated in your friendly neighborhood Publix supermarket. When you eat chipotle or taco bell and you have major gas you ask to fart in someones mouth to avoid the spread of a potentially horrid scent.
A synonym for fellatio popularised by comedian Sacha BaronCohen's character Borat.
Due to Borat's limited understanding of English, he creates his own synonyms, presumably translations of Khazak phrases.