it’s my way or the highway, phr. — Green’s Dictionary of Slang

it’s my way or the highway phr.

[the image of a boy ejecting a girl from his car, some way from home, after she has refused to have sex]

(US) do as I say or you will suffer.

2002		Guardian 24 Oct. 🌐 He had an easy act to follow – his predecessor Marty Schottenheimer was a dour character from the my-way-or-the-highway school of man-management.
2020		L. Lungaro The 3-0 294: The NYPD [...] just don’t care. It’s their way or the highway.