擘開眼講大話 (maak3 hoi1 ngaan5 gong3 daai6 waa6) — blatantly tell a lie; have the audacity to tell a lie with one's eyes wide open in Cantonese
maak˗₃擘hoiˉ¹開ngaanˏ₅眼gong˗₃講daaiˍ₆大waaˍ₆話简 擘开眼讲大话
Mandarin Pinyin: bo4 kai1 yan3 jiang3 da4 hua4
Meaning of 擘開眼講大話
nounblatantly tell a lie; have the audacity to tell a lie with one's eyes wide open