Where can I find a mad lib book?

I have been looking for a mad lib book for a while now. and I cant find one. I am going to try to go to target. a mad lib book is one of those books where you fill in the blanks with and adjective, a verb, a noun or like a person or somthing. I just dont know where to find one. Can someone help me? I want like the jumbo one. Does anyone know where to fine one?