Quotes About Knock-knock

His teeth were now rattling on hers: knock-knock, who's there? Bicuspids. Bicuspids who? Bicuspids McAllister. And then his tongue came flicking out, looking for an opening, any opening, even a missing tooth. But she had no missing teeth and all the teeth she did have were clenched together as in a snapped bear trap.

Shakespeare invented the Knock Knock joke, with the first one appearing in his play Macbeth. Here it is (and prepare yourself, it's a cracker)... 'Knock, knock, knock! Who's there, i' th' name of Beelzebub? Here's a farmer that hanged himself on the expectation of plenty. Come in time, have napkins enough about you, here you'll sweat for 't.