Aaron loves knock, knock jokes and after suffering through his own made up jokes for a couple months (Knock knock - who's there? - House - House who? - House Door! and somehow that was hilarious to him) we got him a children's joke book. For the most part it's okay. It's got some groaners in there and some pretty bad puns but it's also got some jokes that are really bad. I don't mean that they're simply not funny - they're just in really poor taste. For example:
"Where can you find a dog with no legs? - Right where you left him."
"What do you call a mouse with no legs? - Cat food"
Seriously, who compiled these jokes? The screenwriter for Saw?
For now we just don't read them to him, but we'll have to conveniently lose the book when he learns to read.