He is a sexist 'pig'. = He is a 'male chauvinist pig'. [=he is a man who thinks women are not equal to men]
The train station will be renovated 'when pigs fly'. [=it will never be renovated]
“This time I think he'll ask me to marry him!” “Yeah, and 'pigs might fly'.”
(..) bull penises as rewards. He was a veterinarian. How do you know the bull penis stuff? He's middle-aged and he's held every possible job. Four boys, seven dogs, guinea pigs, one reticulated python... You get the point. I got it. Oh, God. I've always hated that fanny pack. (..)2008 TvShow: Bones Title: The Finger in the Nest Season: 4 Episode 3