would see in hell before would

would see somebody in hell before you would do something

if you say that you would see someone in hell before you would do something, especially something that they have asked you to do, you mean that you would never do that thing I'd see her in hell before I'd agree to an arrangement like that.
See see the error of ways, meet in the flesh, find out how the land lies, see in true colours
See also: before, hell, see