>>'Originally, I would guess, a counter to “I'll see you in hell!"' (R.C., 1978).
Now that, finally, makes sense, thank you -- I couldn't figure out where 'further' came from, but it makes more sense if it's not directly a euphemism for hell itself.
'Get knotted' is BE only, so could be nearly as incomprehensible to outsiders; I might have wondered if it meant, for example, 'Get drunk,' as in 'Tie one on.'
'Stuff you' is more clearly negative, but the AE equivalent of that might be 'Up yours.' 'F*** you,' 'F*** off,' etc. are too vulgar and don't match the diction level with Sie.
'Kiss my ass' is too explicit, but 'Go jump in the lake' is probably too mild. Nothing very in between is coming to mind at the moment; maybe someone else will have an idea.
In some contexts in AE, you can use a noun:
You know where you can put your X!
He can take his X and shove it!
Put that X where the sun don't shine!
where X is the bone of contention, salt in the wound, etc.: your fancy car, his paid vacation, her 48 pictures of her new grandbaby, etc.
You can also just omit the end or leave it implied, as I think you can also do in German:
You can just ... = Sie können mich ...
Well, you know what you can do?