a phrase meaning: won't allow it (whatever it may be, and however one defines whatever it is they won't allow).
boy a) I'll borrow money from our parents, Andrew, to play poker with some buddies.
Andrew : I am sick and tired of supporting your stupid poker habit. I have decided on our parents' behalf that i won't stand for it that you borrow money from them. Losing all your money at such nonsense can lead you to doing harakiri