Here's how it breaks down:
* Like it: To accept something willingly or with pleasure.
* Lump it: To accept something unwillingly and without any choice.
Examples:
* "You have to finish this report by tomorrow, like it or lump it."
* "The boss decided on this new policy, so we'll just have to like it or lump it."
* "I didn't want to go to the party, but I went anyway, like it or lump it."
Similar Phrases:
* Take it or leave it
* Accept it or reject it
* Deal with it
The phrase "like it or lump it" conveys a sense of finality and resignation. It implies that the person using the phrase is not open to negotiation or compromise.