Sure, here are a few riddles using the words "banana," "sun," and "computer":

1. What did the banana say to the sun?
   Answer: You're too bright for me!

2. Why did the computer go to the doctor?
   Answer: It had a virus!

3. What do you call a banana that loves to play video games?
   Answer: A "game-a-nana"!

I hope you enjoy these! Let me know if you'd like more.
Kuře, opice, měsíc
Otázka: Co viděla slepice, když se podívala nahoru na oblohu?
Odpověď: Opici na měsíci!