"Knock, knock.Who's there?" very long pause... "Java."
Knock knock! Who's there? Yah! Yah who? Naaah, bro, I prefer google.
Two packets walk into a bar. One of the packets asks the bartender for a drink, and gets no response The other packet tries and the bartender shrugs him off. One packet leans to the other and says, "The quality of service here is terrible!"
Knock, Knock! Who's there? D umbbell. Dumbbell who? Dumbbell doesn't work so I had to knock!
"Have you heard my knock-knock joke?" asked the blonde. "No," said the brunette. "Okay," said the blonde, "you start."
Chuck Norris doesn't use GUI, he prefers the command line.
Knock Knock. Who's there! Ice cream! Ice cream who? Ice cream if you don't let me in!
A man goes inside a pet shop and starts to move around the cages to scout the pets. He sees a monkey with a price of 5000$ and goes to the merchant to ask for details. Hey mister, the monkey…what does it know to worth that much money? Well, it knows Windows 95, 98, 2000, and also knows Word, C++, Visual Basic and last but not least, it knows how to play computer games. - Good monkey, it's worth the money. He goes and finds another monkey with a price of 10000$ and again he will ask the merchant. "What does this monkey know?" "It knows Linux, Unix, Corel and Autocad." "Nice, even I don't know those things." On a last scout run he finds another monkey just sitting there with a price 20000$. The story repeats, and he goes with a lack of confidence to ask the merchant for details. "And what does this monkey do for that ridiculous amount of money?" "I never saw her doing anything, but the other two call her Project Manager!"
Knock knock. Who's there? FBI. FB… We are asking the questions here!
Computers make very fast, very accurate mistakes.