stick it/(something) up your arse!
A rude, vulgar invective expressing disdain, contempt, disgust, or anger to someone (about something). Primarily heard in UK. I've taken enough of the boss's crap—he can stick this job up his arse! Bill: "You're acting like a fool, Dave. You need to sober up and get your life in order." Dave: "Ah, stick it up your arse, Bill! You don't know what's best for me!"