Here are some randomly selected joke topics
Fool
I know you are nobody's fool but maybe someone will adopt you.
Ghosts
What do you get if you cross Bambi with a ghost?
Bamboo!
Frog
What did the frog order when he went to McDonald's?
A hoppy meal.
Cows
What TV programme is watched mainly by cows?
Moos At Ten.
Astronomers
How many astronomers does it take to change a light bulb?
None. Astronomers prefer the dark.
Cats
What do you call a cat who likes to eat lemons?
A sourpuss!
Dog
Did you hear about the dog who went to college?
He won a collarship.
Cows
Why can't you shock cows?
Because they've herd it all before.