A
Vietnamese swearing phrase that is used to express the doubt or the disbelief to the information you receive, or that is another way to
say "No!", meaning you do not want to do something.
A : Ê, cô giáo gọi
cho bố mẹ mày về vụ mày trượt bài kiểm tra rồi đấy. (Hey dude, the
teacher, she called your
parents and told them you've failed the test.)
B: Có cái lồn tao tin. (I ain't believe you.)