The worst of both worlds - meaning

Could you clarify the meaning of the above expression, please. An example of its usage would be very much appreciated.

Thank you in advance.

I belive the origanal phrase is "Best of Both Worlds"

Thank you for kindly answering my question, DRC.
I'm sure that your reply would be enough for a native speaker, but I do not belong to the set - alas - and I'm so sorry that you elected not to be more specific in your explanation. : (
Best regards.

I believe it means that in pursuing a certain course of action a person ends up in a disadvantageous position.

For example; 'in failing to make a decision about whether to marry Mary or Jane, Robert lost both girls: thus got the worst of both worlds.' Not the best example, I admit, but the best I can do off the top of my head. I am sure others can think of better ones.

DFG