The present invention relates to an interchangeable attachment connector system, characterized in that said system comprises: (a) a connector member, wherein said connector member comprises a shaft, said shaft having an engagement end and a distal end, wherein at least a portion of the shaft includes male threads; and (b) an interchangeable attachment capable of being removably engaged to the shaft of the connector member, the interchangeable attachment comprising a body, wherein said body includes two axial ends, an entry opening located in one of said axial ends and an axial bore extending from the entry opening, wherein said bore includes an entry opening and internal walls having female threads complementary to the male threads on the shaft of the connector member, wherein the shaft and the interchangeable attachment can be pushed together for engagement by inserting the engagement end of the shaft through the entry opening, and wherein engagement between the male threads and the female threads on the shaft and the interchangeable attachment prevent relative longitudinal pull-out motion between the engaged shaft of the connector member and interchangeable attachment while allowing relative rotational motion for disengagement of the interchangeable attachment from the shaft of the connector member. In aspects of the invention the interchangeable attachment comprises an interchangeable sexual aid device.