Ok, so my brother made this, here it is:
Knock knock. Who's there? Chicken. Chicken who? Chicken garbage!
Ok I know it makes no sense, but he made it when he was like 3.
Joke 1# "Knock, knock." Who's there? "Pastur." Pastur who? "Past ur bedtime."
Joke 2# Why does a slug always win a race? Because its components always stop for a break.
Joke 3# Your momma's so fat when she stepped on the scale it said, "I asked for your weight, not your phone number."
Knock knock...
Who's there?
Not Stephen Hawking.
Why did the serial killer cross the road? To get to the victim's house.
Knock, knock. Who's there? The serial killer.
Knock, knock. Who's there? You're adopted.
Knock, knock.
Orphan: Who's there?
Not your parents!
Knock knock.
Who's there?
Not your parents.
"Knock, knock.""Who's there?""Not your dad."Random kid: "My dad went to get milk. My mom said he will be back soon."