The phrase "makes one's bed lie on it" is a proverb that suggests that if a person does something wrong or foolish, they must face the consequences. There are several synonyms for this phrase like reaping what you sow, getting your just deserts, facing the music, paying the piper, and taking the rap. These phrases are used to imply that actions have consequences, and the negative effects of those actions cannot be avoided or ignored. Therefore, it's important to be conscious of our actions and decisions and consider the possible outcomes before making any choices. By doing so, we can avoid the need to "make our bed and lie in it" in the first place.