1:To work very hard to the point of busting the proverbial hump.

2: To engage in back breaking labor.
3:To take a hammer and smash the hump of a hunchback.
"Mom, you really bust your hump over meals."
"Tim, you bust your hump at the construction site."
"Can you move, Igor?" "No, sir, someone's gone and bust my hump." "Someone went and bust your hump? How rude."
by SweetCorn27 December 21, 2011
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