Statistics for Answers Contain Knock

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Hint	Answer	% Correct
Who's there?	Knock Knock	96%
The most disease resistant strain of rose on the market.	Knock Out	92%
Pregnant	Knocked Up	88%
Slang for a women's breasts	Knockers	85%
Imitation of a designer product	Knock Off	83%
Bob Dylan song covered by Guns N' Roses	Knocking on Heavens Door	54%
A condition in which the knees are abnormally close together and the ankles wide apart	Knockkneed	53%
Action to prevent "tempting fate" following a favorable observation or boast	Knock on Wood	51%
A reality sports documentary series by NFL Films and HBO	Hard Knocks	46%
To render unconscious	Knock Cold	36%
Tony Orlando and Dawn Song	Knock Three Times	25%
Slang for a violent fight	Knock-Down-Drag-Out	19%
The Idiom for "your one chance to do something important or profitable"	Opportunity Knocks Once	18%
The experiences of life, including hardships and disappointment	School of Hard Knocks	14%
A small sloop with a mainsail, jib and keel but no bowsprit	Knockabout	7%