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spin (one) a line
To tell a lie or only part of the truth in order to convince someone of something or to avoid the consequences of something. Don't you dare spin me a line about being at the library. I want to know exactly where you were tonight.
spin in (one's) grave
To (hypothetically) show enormous anger, disfavor, or regret for someone's actions or something that happens after one has died. That is, if someone were still alive, he or she would be greatly upset, angered, or disgusted by what has happened. I can't believe you're using our employees' pension payments to prop up a Ponzi scheme. The founder of this once-great company would be spinning in his grave to see its directors stoop so low. Your poor mother would spin in her grave if she heard the horrible things you were saying about your sister. I can't believe you wrecked your grandfather's prized truck. That's enough to make him spin in his grave!
keep all the plates spinning
If you keep all the plates spinning you deal successfully with several things at once. I like doing different things, keeping all the plates spinning at the same time. Note: This expression is used in many other structures connected with managing to do several things at once. He already has enough plates spinning — consultancies, newspaper columns, not to mention four restaurants — to keep him in London. When you have to keep as many plates spinning as she does, you know something is sometimes going to crash. Note: This expression comes from the idea of the circus act where a large number of plates are kept spinning on tall sticks.