My oldest son is 32 years old, and I can still recite this book from memory. A man is riding around in his dump truck when a pig clambers into the back to get a ride. Every time the man saw a friend, he waved his hand and tipped the dumper! Other animals joined the pig on his ride, and they all had a great time. I had to buy this for my son when he and his wife announced that they are expecting their first child; I'm sure this copy will get worn out just like all of ours did.