wipe the floor with

wipe the floor with somebody

(British, American & Australian) also mop the floor with somebody (American)

to defeat someone easily Alex is always really good in a debate, she'll wipe the floor with them.

Name	Pronounced	Usage
Gertrude	GUR-trood (English), khər-TRUY-də (Dutch)	English, Dutch
Sarra	-	Biblical Greek, Biblical Latin, Old Church Slavic
Reinier	rie-NEER	Dutch
Whitehead	['(h)wait.hed]
SalomÓN	sah-lo-MON	Spanish
Yidel	-	Yiddish