blow (one's) socks off
To thoroughly impress, overwhelm, or excite one. The show of support from everyone just blew my socks off. That movie really blew my socks off—I didn't expect it to be so good!
knock (one's) socks off
To thoroughly impress, overwhelm, or excite one. The show of support from everyone just knocked my socks off. That movie really knocked my socks off—I didn't expect it to be so good!
knock someone's socks off
and knock the socks off (of) someoneSl. to surprise someone thoroughly. (Fixed order. Of is usually retained before pronouns.) The exciting news just knocked my socks off! The news knocked the socks off of everyone in the office.
blow/knock somebody’s ˈsocks off
(informal) surprise or impress somebody very much: With that dress and your new haircut you’ll knock their socks off! knock (someone's) socks off
Slang To overwhelm or amaze.