heads will roll
Someone will be severely punished, as in If no one meets the chairman's plane, heads will roll. This hyperbolic expression alludes to the punishment of being beheaded.
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The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.