Take it to the woodshed.
Sort priorities.
Light 'em Up!
Hit him so hard his mama feels it.
Slap the taste out of his mouth/fillings out of his teeth
Hit him five times before god knows about it.
Give him a knuckle sandwich.
It’s clobberin’ time!
Rip off his head and shit down his neck.
Bring the pain
Enter a world of hurt
Have a Come to Jesus meeting
Crush your enemies, see them driven before you, and hear the lamentations of their women.
Some very good ones, thanks! (I can’t believe I didn’t think of “take it to the house”.) I especially like this one:
Hit 'em where they ain’t.
Go to DEFCON 1 on his ass.
Initiate the nuclear option.
Oh, I meant “Have an open and frank discussion”.
Tell his mommy on him.
I’ll clean your clock.
With a British accent “Take you to the fukin cleaner”.
How about some inventive ones?
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Rocking it like Chuck Berry.
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Working it like Lindsay Lohan at an all-you-can-blow cocaine bar.
Beat it like a rented mule.
Show 'em how we do it downtown.
Kick some shell. Everyone will think it’s a TMNT reference, but it’s really from the Donkey Kong 64 rap.
Give him/her a good seeing to.
This can be misunderstood, depending on whether it is accompanied by making a fist or pelvic thrusts.
Put the smack down
Droppin’ plates on yo’ ass, beyotch!: Droppin Plates on your ass beeaatch! - YouTube
Give him the full Mitch McConnell!
Go all in on a straight flush!
Going like a paid employee on that task.
On it like a Scientologist fawning over Tom Cruise.
The full Putin.
Heh, I like that one. Which of course leads to:
Going Full Monty.
Reviving my own thread to say that I’m disappointed in you guys: nobody came up with “going to the mattresses”!
In my family it was always “Cry havoc!”. But we were always better read than most ridgerunners.