knock someone's socks off

knock someone's socks off (third-person singular simple present knocks someone's socks off, present participle knocking someone's socks off, simple past and past participle knocked someone's socks off)

1. (idiomatic) To impress greatly; amaze; stun.

   You wouldn't expect teenagers to sing opera, but these kids will knock your socks off.

   • 2021 June 30, Tim Dunn, “How we made... Secrets of the London Underground”, in RAIL, number 934, page 46:

     But one of the enjoyable things of working around the railway is that no matter how well I think I know something or somewhere, there are always days when my socks are blown clean off.

• blow someone away
• blow the socks off

• knock
• knock off
• one's socks off