From Longman Dictionary of Contemporary Englishfeed somebody a linefeed somebody a lineinformalLIE/TELL A LIE to tell someone something which is not true, so that they will do what you want → feed
Examples from the Corpus
feed somebody a line• Charles wondered if Alex Household had carried out his threat of feeding the wrong lines.• I got caught last week because I got fed the wrong line.• She fed him a line about being busy on Saturday.• Taking the bail arm off I fed a little line, re-engaged the pick-up and struck into another cat.• Consumers are being fed this line that merlot is a more refined wine than those harsh, nasty cabernet sauvignons.• He wouldn't feed her the line that would enable her to end her days peacefully in public view.• No one ever knew who had fed this line to Kim. 