A knock knock joke goes like this: A: Knock Knock B: who's there? A: B: who? A: B: ---- For Example: Knock Knock. ''Whos There?.'' Boo! ''Boo who?'' It's all right, please don't cry. Knock Knock. ''Who's There?.'' Banana! ''Banana who?'' Knock Knock. ''Who's There?.'' Banana! ''Banana who?'' Knock Knock. ''Who's There?.'' Banana! ''Banana who?'' Knock Knock. ''Who's There?.'' Orange! ''Orange who?'' Orange ya glad I didn't say Banana? ----- Knock, knock Who's there? Orson Orson who? Orson Buggy! Knock, knock Who's there Sam and Janet Sam and Janet who? Sam and Janet evening, you will meet a stranger.... ''Ok... someone explain this one to me.... Oh and I ought to let you know that my sense of humor is so bad, I've put comedians out of business.'' From ''South Pacific'', the musical: ''Some enchanted evening, you will meet a stranger...'' ---- Knock Knock Who's There? Doorbell Repair Service '''' ''Who's there?'' ''Avon Calling, Doorbell's broken.'' ---- The "JEDR" KnockKnockJoke: "You start." ''"Okay. Knock-knock."'' "Who's there?" ''"Um ... Um ..."'' ''[on "JEDR": Ancient rec.humor.funny parlance for joke ethnic/denomination/race, and certainly not the initials of one Jonathan Richmond, in response to whose legal action against the moderator of the group the term was invented.]'' ---- "Knock, Knock" ''"Who's there?"'' "Knock, Knock" ''"Who's there?"'' "Knock, Knock" ''"Who's there?"'' "Phillip Glass" ---- Knock, Knock: Whose there? Meter Meter who? Meter down stairs.... You're late. ---- A knock-knock joke is a good example to use when one of your non-geek friends asks you what a "protocol" is. It has a standard initiation message, followed by a standard acceptance message, a send-and-echo, and a final message that ends the transaction. Some of the more interesting knock-knock jokes are those where the protocol is violated, such as the banana/orange and Philip Glass jokes above. ---- ''Knock, knock.'' Who's there? ''Philip.'' Philip who? ''Philip the tub so I can take a bath.'' ---- ''Knock, Knock.'' Who's there? ''Dwayne.'' Dwayne who? ''Dwayne the bathtub, I'm dwowning.'' ---- ''Knock, Knock.'' Who's there? ''Amsterdam.'' Amsterdam who? ''Amsterdam tired of these infernal knock-knock jokes.'' ---- ''Knock Knock'', "Who's there?", ''"Amos"'', "Amos who", ''"Amosquito bit me."'' ''Knock Knock'', "Who's there?", ''"Andy"'', "Andy who", ''"Andy bit me again!"'' ---- ''Knock, Knock.'' Who's there? ''Impatient cow.'' Impatient co-- MOOO!!! '''Immediately afterward, if in physical presence of victim:''' ''Knock, Knock.'' Who's there? ''Interrupting Starfish.'' Interrupti- ''[Throws splayed hand in face of victim]" [Note that "interrupting" gives you more time to interrupt in, and makes it harder for those in on the joke to just say the response fast] '''And after that, if in presence of physicist victim:''' ''Knock, knock.'' Who's there? ''An interrupting coefficient of friction.'' An interru-- ''MU!'' ---- ''Knock, Knock.'' Who's there? ''Lil' ol' lady'' Lil' ol' lady who? ''I didn't know you could yodel!'' ---- Here's a RudyGiuliani knock knock joke: ''Knock, Knock'' Who's ther- ''9/11!!'' ---- See LightBulbJoke, WorstPunEver ---- CategoryJoke