Knock knock. Who is there? Lettuce. Lettuce who? Lettuce in, it is cold out here! The vegetable had been standing outside for twenty minutes and was absolutely freezing.

Knock knock. Who is there? Cow says. Cow says who? No silly, cow says MOO! The farmer at the door had heard this one a hundred times but still laughed every time.

Knock knock. Who is there? Olive. Olive who? Olive you and I miss you! The other person opened the door immediately - no one can resist that kind of declaration.

Knock knock. Who is there? Boo. Boo who? Do not cry, it is just a joke! The ghost at the door felt terrible about making anyone sad and apologized immediately.

Knock knock. Who is there? Interrupting cow. Interrupting cow wh - MOO! The timing is everything with this one - the moo has to land before the question finishes.

Knock knock. Who is there? Atch. Atch who? Bless you! The visitor had been holding that sneeze in for quite some time and was very relieved to let it out.

Knock knock. Who is there? Nanna. Nanna who? Nanna your business! Grandma always said if you do not want to be interrupted, do not answer the door.

What do you call a sleeping dinosaur? A dino-snore! The prehistoric creature could rattle the trees and had the whole jungle wide awake every night.

What do you call a cat that gets everything it wants? Purrsuasive! That cat had the whole family trained within a week - belly rubs on demand, premium food, and the best seat on the couch.

Why do giraffes dislike fast food? Because it takes too long to swallow. By the time the burger reaches the stomach, the fries are already cold and the drink has gone flat.

Why do penguins always look so formal? Because they are always dressed to grill! Every penguin is ready for a black-tie event - or at minimum, a very classy barbecue.

What do you call a kangaroo on a rainy day? A soggy jumper! She hopped indoors and wrung out her pouch - the soggy crackers stored inside were a tragedy.

Why do parrots avoid umbrellas? Because Polly wants a cracker, not a raincoat. The parrot tried an umbrella once but kept repeating "What a storm!" until everyone went inside.

Why did the elephant bring a suitcase? Because he always travels with his trunk! The airline still charged for baggage, which was the biggest injustice of the safari.

What did the zero say to the eight? "Nice belt!" The eight blushed and thanked the zero for noticing - it had been wearing that belt since second grade.

Why do history teachers dislike jokes? Because they find all the material too dated! Also, they have heard all the jokes before - they were there the first time.

Why was the gym teacher always calm? Because they were really good at stretching the truth. Also, decades of yoga training and an unshakeable belief in the power of cool-down exercises.

Why did the student eat his homework? Because the teacher told him it would be a piece of cake! He took the feedback literally and was later found in the cafeteria looking very satisfied.

Why was the art student failing class? Because she kept drawing a blank! Her sketchbook had thirty pages of pristine white paper - the teacher called it bold minimalism.

Why did the school bus driver quit? Because the kids kept driving him crazy! Between the singing, the chaos, and the perpetual "Are we there yet?", he requested early retirement.