bust my butt

[Coffa]

Originally Posted by Casiopea

bust one's butt, "to make an extreme, strenuous effort, to exert oneself"
butt from buttocks, "end, human posterior"
bust a variatuion of burst, "break"
Hope that helps.

I think it can also be used in American English as a variant of "I'm going to bust your ass" (give you a hard time), can't it?

As in the "Waldorf Salad" sketch from "Fawlty Towers" with John Cleese:

American Diner: "Fawlty, I want you to go in there and bust that chef's ass."
Fawlty (pretending to shout to the chef): "Right, you, you'd better sort yourself out, or I'm going to come in right now and break your bottom."

[Casiopea]

Exactly. North American English, "Stop bustin' my butt."

[dean1]

Hi all.
I got another question about the following idiom:
'nail your butt to the wall'.
Can anyone pls explain the meaning and give an example of its usage?

thanks