Here are some randomly selected joke topics beginning with the letter 'F'
Funeral
Wedding - a funeral where you smell your own flowers.
Fruit
Why did the man lose his job with a fruit packing company?
Because he kept throwing the bent bananas away.
Fruit cake
Why is history just like a fruit cake?
Because it's full of dates.
Fun
Why are goats fun to have at your party?
They are always kidding around.
Fun
Teacher: Take this sentence: "I don't have no fun at the weekend." How should I correct this?
Pupil: Perhaps you could try and find a boyfriend.