The unforgettable joke book

Today we will read a joke book.
Do you like jokes?
It is a San Francisco joke.
I love knock knock jokes.
I will give you one knock knock joke.
Who's  there?
Minnow.
Minnow who?
Let minnow when you finish your schoolwork.
I love the local ones, too.
For example = Why did the clownfish get in trouble?
He was clowning around!
Another joke = What kind of fish does a cowboy ride?
A sea horse!