wipe the floor with
US /waɪp ðə flɔr wɪθ/
UK /waɪp ðə flɔr wɪθ/

1.
to defeat someone very easily or thoroughly
:
•
Our team is going to wipe the floor with them in the championship.
•
The lawyer wiped the floor with the opposing counsel during the cross-examination.
2.
to treat someone very badly or disrespectfully
:
•
He always tries to wipe the floor with his subordinates.
•
Don't let them wipe the floor with you; stand up for yourself!