Probably a bastardization of smart as a whip, meaning unusually intelligent or quick witted.
Often changed for comic effect by substituting 'whip' for an object with no edges.
Often changed for comic effect by substituting 'whip' for an object with no edges.
"Although Arthur looks like a clueless dork, he's as sharp as a whip and completely in control."
"As sharp as chewed gum, more like!"
"As sharp as chewed gum, more like!"
by Eyeyambob July 3, 2013
For example, Sean’s “Sharp As A Whip.” How did he remember all those events during the Attila the Hun?
by Ric Ross November 16, 2019