Well, these aren't long ones, but they're pretty terrible jokes!
Q: What do Dora the Explorer and Alexander the Great have in common?
A: They have the same middle name.
Q: What did Batman say to Robin before they got in the car?
A: "Robin, get in the car."
Q: What's brown and sticky?
A: A stick.
I hope these help. I'm not good at jokes. I'm better at advice. If you need any, please email me. If you'd rather read some really bad jokes, look on google.