The idea for the pet rock was conceived by marketing executive Gary Doll in the 1970's while he was in a bar with his friends who were all talking about the difficulties of keeping up a housepet.

这个概念是1970年由营销主管加里·多尔提出的，当时他和朋友在酒吧里抱怨在家里当铲屎官的各种困难。