My Joke Book (Dirty Bertie)

Dirty Bertie has his very own joke book, packed full of disgusting jokes that are guaranteed to have you laughing your socks off!
Why do apples on trees remind Bertie of bogeys?They're fresh, green and ready to pick!
What wears a coat in the winter and pants all summer?A dog!
Why did the toilet paper roll down the hill?To get to the bottom!