I love this little book. These jokes are hilariously stupid. Most follow each other (you have to tell one joke before you tell the next) and a few require looking at the pictures (which is why I couldn't give it a perfect 5), but they are really awesomely silly jokes.
"How can you tell an elephant from a grape?"
"Grapes are purple."
"What did Jane say when she saw all the elephants?"
"Oh! Look at all those grapes!" (Jane was colorblind)