clean the floor up with

clean the floor (up) with (one)

1. To deliver a violent and prolonged physical attack. 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 an opponent decisively. 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

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