Visitor : "Knock knock?" Worker: "Who's there?" Visitor : "Doughnut Man." Worker: "Doughnut Man who?" Visitor : "For the last time, do not (doughnut) bother me with your useless 'Knock-Knock' jokes!" Worker: "But you started it!"

Knock-knock Who's there Who Who who I don't know what the heck your talking about but good owl impression.

Knock Knock?? who's there? Hatch Hatch-who? Bless you

Knock KnocK??? Who's there? Ya Ya who? Where did that cowboy come from??

Knock Knock? Who's there? Megan Megan who? Makin a list chekin it twice gonna find out who's naughty or nice.

Knock Knock! Who's there? Yo da lay he. Yo da lay he who? I didn't know you could yodel!

Knock-Knock Who's There? Rita Rita who? Rita book, you might learn something!

Knock-Knock? Who's there? Alison. Alison who? Alison (I listen) to the radio sometimes!

Knock! Knock! Who's there? Harry. Harry who? Harry up and let me in!

Knock knock. Who's there? You. You who? Yoo hoo, I'm right over here!

Knock Knock! Who's There? Dishwasher. Dishwasher Who? Dishwasher whay I sphoke vhefore I hafe fawse feeth (This was the way I spoke before I had false teeth)

Rich and Kim, a couple, were in a room when Kim asked Rich if he would ever forget her. He replied that he would never forget her. Then she said, "Knock-knock!" and, of course, Rich said, "Who's there?" "See!" she exclaimed sulkily. "You have forgotten already."