Knock your block off

Posted by R. Berg on May 02, 2002

In Reply to: Knock your block off posted by Valerie on May 02, 2002

: I have searched for the origin of this phrase, but all I find is "knock on wood" of "knock your socks off"
: can anyone out there help?

"Block" has been slang for the human head as far back as 1635, at least (Oxford English Dictionary).