I can't believe it-here I am, after a year of studying virtues and struggling to find an honest life for myself, about to spin a big fat lie.

我真不敢相信——一整年学习美德、努力为自己追求诚实的生活之后，我即将吐出一个天大的谎言。

youdao

"We've been living a big fat lie, " he said.

BBC: The joylessness of shopping

In a word, most of the movie's tear-jerking plays like a big, fat lie.

CNN: Flu-suffering reviewer gives cold take on 'Jack Frost'