Here are some examples of how it is used:
* "The customer service representative bent over backwards to resolve the issue." This means the representative went above and beyond to help the customer.
* "She bent over backwards to make sure everyone felt welcome at the party." This means she put in extra effort to be inclusive and make sure everyone had a good time.
Essentially, the idiom implies that someone is exerting a lot of effort and willingness to please or accommodate.