Shut the heck up
Used to the same effect as "shut the hell up" by someone who doesn't use the word hell, often little kids who get in trouble for such "cuss words."
Person 1: You're such a momma's boy!
Person 2: Oh yeah? Well, shut the heck up!
Person 1: Ooh, real tough! What's the matter, mommy won't let you say hell?
Person 2: ...SHUT UP!