clean the floor up with

clean the floor (up) with (one)

1. To physically attack one, as with punches and other blows, such that they suffer significant injury. I'm worried that the captain of the football team will clean the floor with me if he finds out that I'm secretly seeing his girlfriend. Oh, my boyfriend knows that I would clean the floor up with him if he ever lies to me about something that serious.
2. To defeat one decisively in a competition. In this usage, "up" is not typically used in the phrase. The final score was 17-1? Wow, we really cleaned the floor with that team!
See also: clean, floor
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

clean the floor up with someone

Fig. to beat someone up. If you don't shut up, I'll clean up the floor with you. You won't clean the floor up with me!
See also: clean, floor, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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