kick ass

kick ass idiom
Also, kick butt. Punish or discipline harshly; also, defeat soundly. For example, That foreman's furious; he's going to kick ass before the day is over, or Our team is out to kick butt today. [Vulgar slang; 1940s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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