Here are some randomly selected joke topics beginning with the letter 'R'
Rabbits
What do you get if you cross a bumble bee with a rabbit?
A honey bunny.
Rabbits
There was a man who painted rabbits all over his bald head.
Claimed they looked like hares from a distance.
Rage
Why are you so angry?
Because it's all the rage.
Race
How do you start a teddy bear race?
Ready! Teddy! Go!
Rabbits
What do you get if you cross a flea with a rabbit?
Bugs Bunny.
Rabbits
Which rabbits became famous bank robbers?
Bunny and Clyde.
Rabbits
What do you call a rabbit who has fleas?
Bugs bunny.
Rabbit
What do you call a rabbit that's just won the lottery?
A millionhare.
Rabbits
How do rabbits go on vacation?
In a hareplane.